MQTT timestamps and protocol improvements (#140 )

* add TS_INPUT, TS_GRID and TS_TOTAL * prepare MQTT timestamps - add _set_mqtt_timestamp method - fix hexdump printing * push dev and debug images to docker.io * add unix epoche timestamp for MQTT pakets * set timezone for unit tests * set name für setting timezone step * trigger new action * GEN3 and GEN3PLUS: handle multiple message - read: iterate over the receive buffer - forward: append messages to the forward buffer - _update_header: iterate over the forward buffer * GEN3: optimize timeout handling - longer timeout in state init and reveived - got to state pending only from state up * update changelog * cleanup
bump aiomqtt and schema to latest release (#137 )
2024-08-04 19:43:09 +02:00 · 2024-07-27 20:36:17 +02:00 · 2024-07-27 19:37:40 +02:00 · 2024-07-24 22:37:09 +02:00 · 2024-07-24 22:36:51 +02:00 · 2024-07-23 23:38:48 +02:00
30 changed files with 1516 additions and 658 deletions
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -29,6 +29,12 @@ jobs:
    runs-on: ubuntu-latest

    steps:
+    - name: Set timezone
+      uses: szenius/set-timezone@v2.0
+      with:
+        timezoneLinux: "Europe/Berlin"
+        timezoneMacos: "Europe/Berlin"
+        timezoneWindows: "Europe/Berlin"
    - uses: actions/checkout@v4
    - name: Set up Python 3.12
      uses: actions/setup-python@v5
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

 ## [unreleased]

+- add timestamp to MQTT topics [#138](https://github.com/s-allius/tsun-gen3-proxy/issues/138)
+- improve the message handling, to avoid hangs
+- GEN3: allow long timeouts until we received first inverter data (not only device data)
+- bump aiomqtt to version 2.2.0
+- bump schema to version 0.7.7
+- Home Assistant: improve inverter status value texts
+- GEN3: add inverter status
+- fix flapping registers [#128](https://github.com/s-allius/tsun-gen3-proxy/issues/128)
+- register OUTPUT_COEFFICIENT at HA
+- GEN3: INVERTER_STATUS,
+- add config option to disable the MODBUS polling [#120](https://github.com/s-allius/tsun-gen3-proxy/issues/120)
+- make the maximum output coefficient configurable [#123](https://github.com/s-allius/tsun-gen3-proxy/issues/123)
+- cleanup shutdown
+- add preview build
+- MODBUS: the last digit of the inverter version is a hexadecimal number [#119](https://github.com/s-allius/tsun-gen3-proxy/issues/119)
+- GEN3PLUS: add client_mode connection on port 8899 [#117](https://github.com/s-allius/tsun-gen3-proxy/issues/117)
+
 ## [0.9.0] - 2024-07-01

 - fix exception in MODBUS timeout callback
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 <p align="center">
    <a href="https://opensource.org/licenses/BSD-3-Clause"><img alt="License: BSD-3-Clause" src="https://img.shields.io/badge/License-BSD_3--Clause-green.svg"></a>
    <a href="https://www.python.org/downloads/release/python-3120/"><img alt="Supported Python versions" src="https://img.shields.io/badge/python-3.12-blue.svg"></a>
-    <a href="https://sbtinstruments.github.io/aiomqtt/introduction.html"><img alt="Supported aiomqtt versions" src="https://img.shields.io/badge/aiomqtt-2.0.1-lightblue.svg"></a>
+    <a href="https://sbtinstruments.github.io/aiomqtt/introduction.html"><img alt="Supported aiomqtt versions" src="https://img.shields.io/badge/aiomqtt-2.2.0-lightblue.svg"></a>
    <a href="https://libraries.io/pypi/aiocron"><img alt="Supported aiocron versions" src="https://img.shields.io/badge/aiocron-1.8-lightblue.svg"></a>
    <a href="https://toml.io/en/v1.0.0"><img alt="Supported toml versions" src="https://img.shields.io/badge/toml-1.0.0-lightblue.svg"></a>
 </p>
@@ -165,6 +165,9 @@ pv2 = {type = 'RSM40-8-405M', manufacturer = 'Risen'}   # Optional, PV module de
 monitor_sn = 2000000000       # The "Monitoring SN:" can be found on a sticker enclosed with the inverter
 node_id = 'inv_3'             # MQTT replacement for inverters serial number  
 suggested_area = 'garage'     # suggested installation place for home-assistant
+# if your inverter supports SSL connections you must use the client_mode. Pls, uncomment
+# the next line and configure the fixed IP of your inverter
+#client_mode = {host = '192.168.0.1', port = 8899}       
 pv1 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 pv2 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 pv3 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
@@ -188,8 +191,20 @@ The standard web interface of the inverter can be accessed at `http://<ip-adress

 For our purpose, the hidden URL `http://<ip-adress>/config_hide.html` should be called. There you can see and modify the parameters for accessing the cloud. Here we enter the IP address of our proxy and the IP port `10000` for the `Server A Setting` and for `Optional Server Setting`. The second entry is used as a backup in the event of connection problems.

+❗If the IP port is set to 10443 in the inverter configuration, you probably have a firmware with SSL support. In this case, you must use the client-mode configuration.
+
 If access to the web interface does not work, it can also be redirected via DNS redirection, as is necessary for the GEN3 inverters.

+## Client Mode (GEN3PLUS only)
+
+Newer GEN3PLUS inverters support SSL encrypted connections over port 10443 to the TSUN cloud. In this case you can't loop the proxy into this connection, since the certicate verification of the inverter don't allow this. You can configure the proxy in client-mode to establish an unencrypted connection to the inverter. For this porpuse the inverter listen on port `8899`.
+
+There are some requirements to be met:
+
+- the inverter should have a fixed IP
+- the proxy must be able to reach the inverter. You must configure a corresponding route in your router if the inverter and the proxy are in different IP networks
+- add a 'client_mode' line to your config.toml file, to specify the inverter's ip address
+
 ## DNS Settings

 ### Loop the proxy into the connection
@@ -226,11 +241,11 @@ In the following table you will find an overview of which inverter model has bee
 A combination with a red question mark should work, but I have not checked it in detail.

 <table align="center">
-  <tr><th align="center">Micro Inverter Model</th><th align="center">Fw. 1.00.06</th><th align="center">Fw. 1.00.17</th><th align="center">Fw. 1.00.20</th><th align="center">Fw. 4.0.10</th></tr>
-  <tr><td>GEN3 micro inverters (single MPPT):<br>MS300, MS350, MS400<br>MS400-D</td><td align="center">❓</td><td align="center">❓</td><td align="center">❓</td><td align="center">➖</td></tr>
-  <tr><td>GEN3 micro inverters (dual MPPT):<br>MS600, MS700, MS800<br>MS600-D, MS800-D</td><td align="center">✔️</td><td align="center">✔️</td><td align="center">✔️</td><td align="center">➖</td></tr>
-  <tr><td>GEN3 PLUS micro inverters:<br>MS1600, MS1800, MS2000<br>MS2000-D</td><td align="center">➖</td><td align="center">➖</td><td align="center">➖</td><td align="center">✔️</td></tr>
-  <tr><td>TITAN micro inverters:<br>TSOL-MP3000, MP2250, MS3000</td><td align="center">❓</td><td align="center">❓</td><td align="center">❓</td><td align="center">❓</td></tr>
+  <tr><th align="center">Micro Inverter Model</th><th align="center">Fw. 1.00.06</th><th align="center">Fw. 1.00.17</th><th align="center">Fw. 1.00.20</th><th align="center">Fw. 4.0.10</th><th align="center">Fw. 4.0.20</th></tr>
+  <tr><td>GEN3 micro inverters (single MPPT):<br>MS300, MS350, MS400<br>MS400-D</td><td align="center">❓</td><td align="center">❓</td><td align="center">❓</td><td align="center">➖</td><td align="center">➖</td></tr>
+  <tr><td>GEN3 micro inverters (dual MPPT):<br>MS600, MS700, MS800<br>MS600-D, MS800-D</td><td align="center">✔️</td><td align="center">✔️</td><td align="center">✔️</td><td align="center">➖</td><td align="center">➖</td></tr>
+  <tr><td>GEN3 PLUS micro inverters:<br>MS1600, MS1800, MS2000<br>MS2000-D</td><td align="center">➖</td><td align="center">➖</td><td align="center">➖</td><td align="center">✔️</td><td align="center">✔️</td></tr>
+  <tr><td>TITAN micro inverters:<br>TSOL-MP3000, MP2250, MS3000</td><td align="center">❓</td><td align="center">❓</td><td align="center">❓</td><td align="center">❓</td><td align="center">❓</td></tr>
 </table>

 ```txt
--- a/app/build.sh
+++ b/app/build.sh
@@ -21,35 +21,55 @@ IMAGE=tsun-gen3-proxy
 if [[ $1 == debug ]] || [[ $1 == dev ]] ;then
 IMAGE=docker.io/sallius/${IMAGE}
 VERSION=${VERSION}-$1
-elif [[ $1 == rc ]] || [[ $1 == rel ]];then
+elif [[ $1 == rc ]] || [[ $1 == rel ]] || [[ $1 == preview ]] ;then
 IMAGE=ghcr.io/s-allius/${IMAGE}
 else
 echo argument missing!
-echo try: $0 '[debug|dev|rc|rel]'
+echo try: $0 '[debug|dev|preview|rc|rel]'
 exit 1
 fi

 echo version: $VERSION  build-date: $BUILD_DATE   image: $IMAGE
 if [[ $1 == debug ]];then
 docker build --build-arg "VERSION=${VERSION}" --build-arg environment=dev --build-arg "LOG_LVL=DEBUG" --label "org.opencontainers.image.created=${BUILD_DATE}" --label "org.opencontainers.image.version=${VERSION}" --label "org.opencontainers.image.revision=${BRANCH}" -t ${IMAGE}:debug app
+echo " => pushing ${IMAGE}:debug"
+docker push -q ${IMAGE}:debug
+
 elif [[ $1 == dev ]];then
 docker build --build-arg "VERSION=${VERSION}" --build-arg environment=production --label "org.opencontainers.image.created=${BUILD_DATE}" --label "org.opencontainers.image.version=${VERSION}" --label "org.opencontainers.image.revision=${BRANCH}" -t ${IMAGE}:dev app
+echo " => pushing ${IMAGE}:dev"
+docker push -q ${IMAGE}:dev
+
+elif [[ $1 == preview ]];then
+docker build --build-arg "VERSION=${VERSION}" --build-arg environment=production --label "org.opencontainers.image.created=${BUILD_DATE}" --label "org.opencontainers.image.version=${VERSION}" --label "org.opencontainers.image.revision=${BRANCH}" -t ${IMAGE}:preview -t ${IMAGE}:${VERSION} app
+echo 'login to ghcr.io'    
+echo $GHCR_TOKEN | docker login ghcr.io -u s-allius --password-stdin
+echo " => pushing ${IMAGE}:preview"
+docker push -q ${IMAGE}:preview
+echo " => pushing ${IMAGE}:${VERSION}"
+docker push -q ${IMAGE}:${VERSION}

 elif [[ $1 == rc ]];then
 docker build --build-arg "VERSION=${VERSION}" --build-arg environment=production --label "org.opencontainers.image.created=${BUILD_DATE}" --label "org.opencontainers.image.version=${VERSION}" --label "org.opencontainers.image.revision=${BRANCH}" -t ${IMAGE}:rc -t ${IMAGE}:${VERSION} app
 echo 'login to ghcr.io'    
 echo $GHCR_TOKEN | docker login ghcr.io -u s-allius --password-stdin
-docker push -q ghcr.io/s-allius/tsun-gen3-proxy:rc
-docker push -q ghcr.io/s-allius/tsun-gen3-proxy:${VERSION}
+echo " => pushing ${IMAGE}:rc"
+docker push -q ${IMAGE}:rc
+echo " => pushing ${IMAGE}:${VERSION}"
+docker push -q ${IMAGE}:${VERSION}

 elif [[ $1 == rel ]];then
 docker build --no-cache --build-arg "VERSION=${VERSION}" --build-arg environment=production --label "org.opencontainers.image.created=${BUILD_DATE}" --label "org.opencontainers.image.version=${VERSION}" --label "org.opencontainers.image.revision=${BRANCH}" -t ${IMAGE}:latest -t ${IMAGE}:${MAJOR} -t ${IMAGE}:${VERSION} app
 echo 'login to ghcr.io'    
 echo $GHCR_TOKEN | docker login ghcr.io -u s-allius --password-stdin
-docker push -q ghcr.io/s-allius/tsun-gen3-proxy:latest
-docker push -q ghcr.io/s-allius/tsun-gen3-proxy:${MAJOR}
-docker push -q ghcr.io/s-allius/tsun-gen3-proxy:${VERSION}
+echo " => pushing ${IMAGE}:latest"
+docker push -q ${IMAGE}:latest
+echo " => pushing ${IMAGE}:${MAJOR}"
+docker push -q ${IMAGE}:${MAJOR}
+echo " => pushing ${IMAGE}:${VERSION}"
+docker push -q ${IMAGE}:${VERSION}
 fi

-echo 'check docker-compose.yaml file'
-docker-compose config -q
+echo ' => checking docker-compose.yaml file'
+docker-compose config -q
+echo 'done'
--- a/app/config/default_config.toml
+++ b/app/config/default_config.toml
@@ -44,6 +44,11 @@ inverters.allow_all = true   # allow inverters, even if we have no inverter mapp
 monitor_sn = 2000000000       # The "Monitoring SN:" can be found on a sticker enclosed with the inverter
 #node_id = ''                 # Optional, MQTT replacement for inverters serial number  
 #suggested_area = ''          # Optional, suggested installation place for home-assistant
+
+# if your inverter supports SSL connections you must use the client_mode. Pls, uncomment
+# the next line and configure the fixed IP of your inverter
+#client_mode = {host = '192.168.0.1', port = 8899}  
+
 #pv1 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 #pv2 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
 #pv3 = {type = 'RSM40-8-410M', manufacturer = 'Risen'}   # Optional, PV module descr
--- a/app/proxy.svg
+++ b/app/proxy.svg
@@ -4,381 +4,408 @@
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 <title>A8&#45;&gt;A8</title>
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--- a/app/proxy.yuml
+++ b/app/proxy.yuml
@@ -4,25 +4,27 @@

 [note: You can stick notes on diagrams too!{bg:cornsilk}]
 [Singleton]^[Mqtt|<static>ha_restarts;<static>__client;<static>__cb_MqttIsUp|<async>publish();<async>close()]
-[Modbus|que;;snd_handler;rsp_handler;timeout:max_retires;last_xxx;err;retry_cnt;req_pend;tim|build_msg();recv_req();recv_resp()]
+[Modbus|que;;snd_handler;rsp_handler;timeout;max_retires;last_xxx;err;retry_cnt;req_pend;tim|build_msg();recv_req();recv_resp();close()]
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 [Message]^[SolarmanV5|control;serial;snr;db:InfosG3P;mb:Modbus;switch|msg_unknown();;close()]
-[Talent]^[ConnectionG3|remoteStream:ConnectionG3|close()]
+[Talent]^[ConnectionG3|remoteStream:ConnectionG3|healthy();close()]
 [Talent]has-1>[Modbus]
-[SolarmanV5]^[ConnectionG3P|remoteStream:ConnectionG3P|close()]
+[SolarmanV5]^[ConnectionG3P|remoteStream:ConnectionG3P|healthy();close()]
 [SolarmanV5]has-1>[Modbus]
 [AsyncStream|reader;writer;addr;r_addr;l_addr|<async>server_loop();<async>client_loop();<async>loop;disc();close();;__async_read();async_write();__async_forward()]^[ConnectionG3]
 [AsyncStream]^[ConnectionG3P]
-[Inverter|cls.db_stat;cls.entity_prfx;cls.discovery_prfx;cls.proxy_node_id;cls.proxy_unique_id;cls.mqtt:Mqtt|]^[InverterG3|__ha_restarts|async_create_remote();;close()]
-[Inverter]^[InverterG3P|__ha_restarts|async_create_remote();;close()]
+[Inverter|cls.db_stat;cls.entity_prfx;cls.discovery_prfx;cls.proxy_node_id;cls.proxy_unique_id;cls.mqtt:Mqtt|]^[InverterG3|__ha_restarts|async_create_remote();async_publ_mqtt();;close()]
+[Inverter]^[InverterG3P|__ha_restarts|async_create_remote(;)async_publ_mqtt();close()]
 [Mqtt]-[Inverter]
 [ConnectionG3]^[InverterG3]
 [ConnectionG3]has-0..1>[ConnectionG3]
 [ConnectionG3P]^[InverterG3P]
 [ConnectionG3P]has-0..1>[ConnectionG3P]
-[Infos|stat;new_stat_data;info_dev|static_init();dev_value();inc_counter();dec_counter();ha_proxy_conf;ha_conf;update_db;set_db_def_value;get_db_value;ignore_this_device]^[InfosG3||ha_confs();parse()]
+
+[Infos|stat;new_stat_data;info_dev|static_init();dev_value();inc_counter();dec_counter();ha_proxy_conf;ha_conf;ha_remove;update_db;set_db_def_value;get_db_value;ignore_this_device]^[InfosG3||ha_confs();parse()]
 [Infos]^[InfosG3P||ha_confs();parse()]
 [InfosG3P]->[SolarmanV5]
 [InfosG3]->[Talent]
+[ModbusConn|host;port;addr;stream:InverterG3P;|]has-1>[InverterG3P]

--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -1,4 +1,4 @@
-    aiomqtt==2.0.1
-    schema==0.7.5
+    aiomqtt==2.2.0
+    schema==0.7.7
    aiocron==1.8
    aiohttp==3.9.5
--- a/app/src/async_stream.py
+++ b/app/src/async_stream.py
@@ -35,22 +35,33 @@ class AsyncStream():
        self.proc_max = 0

    def __timeout(self) -> int:
-        if self.state == State.init:
+        if self.state == State.init or self.state == State.received:
            to = self.MAX_START_TIME
        else:
-            if self.server_side:
+            if self.server_side and self.modbus_polling:
                to = self.MAX_INV_IDLE_TIME
            else:
                to = self.MAX_CLOUD_IDLE_TIME
        return to

+    async def publish_outstanding_mqtt(self):
+        '''Publish all outstanding MQTT topics'''
+        try:
+            if self.unique_id:
+                await self.async_publ_mqtt()
+            await self._async_publ_mqtt_proxy_stat('proxy')
+        except Exception:
+            pass
+
    async def server_loop(self, addr: str) -> None:
        '''Loop for receiving messages from the inverter (server-side)'''
        logger.info(f'[{self.node_id}:{self.conn_no}] '
                    f'Accept connection from {addr}')
        self.inc_counter('Inverter_Cnt')
+        await self.publish_outstanding_mqtt()
        await self.loop()
        self.dec_counter('Inverter_Cnt')
+        await self.publish_outstanding_mqtt()
        logger.info(f'[{self.node_id}:{self.conn_no}] Server loop stopped for'
                    f' r{self.r_addr}')

@@ -61,10 +72,6 @@ class AsyncStream():
                        f'connection: [{self.remoteStream.node_id}:'
                        f'{self.remoteStream.conn_no}]')
            await self.remoteStream.disc()
-        try:
-            await self._async_publ_mqtt_proxy_stat('proxy')
-        except Exception:
-            pass

    async def client_loop(self, addr: str) -> None:
        '''Loop for receiving messages from the TSUN cloud (client-side)'''
--- a/app/src/config.py
+++ b/app/src/config.py
@@ -53,7 +53,12 @@ class Config():
                                                     Use(lambda s: s + '/'
                                                         if len(s) > 0 and
                                                         s[-1] != '/' else s)),
-
+                Optional('client_mode'): {
+                    'host': Use(str),
+                    Optional('port', default=8899):
+                        And(Use(int), lambda n: 1024 <= n <= 65535)
+                    },
+                Optional('modbus_polling', default=True): Use(bool),
                Optional('suggested_area',  default=""): Use(str),
                Optional('pv1'): {
                    Optional('type'): Use(str),
--- a/app/src/gen3/infos_g3.py
+++ b/app/src/gen3/infos_g3.py
@@ -31,6 +31,9 @@ class RegisterMap:
        0xffffff06: Register.OTA_START_MSG,
        0xffffff07: Register.SW_EXCEPTION,
        0xffffff08: Register.MAX_DESIGNED_POWER,
+        0xffffff09: Register.OUTPUT_COEFFICIENT,
+        0xffffff0a: Register.INVERTER_STATUS,
+        0xffffff0b: Register.POLLING_INTERVAL,
        0xfffffffe: Register.TEST_REG1,
        0xffffffff: Register.TEST_REG2,
        0x00000640: Register.OUTPUT_POWER,
--- a/app/src/gen3/talent.py
+++ b/app/src/gen3/talent.py
@@ -1,7 +1,9 @@
 import struct
 import logging
 import time
+import pytz
 from datetime import datetime
+from tzlocal import get_localzone

 if __name__ == "app.src.gen3.talent":
    from app.src.messages import hex_dump_memory, Message, State
@@ -9,12 +11,14 @@ if __name__ == "app.src.gen3.talent":
    from app.src.my_timer import Timer
    from app.src.config import Config
    from app.src.gen3.infos_g3 import InfosG3
+    from app.src.infos import Register
 else:  # pragma: no cover
    from messages import hex_dump_memory, Message, State
    from modbus import Modbus
    from my_timer import Timer
    from config import Config
    from gen3.infos_g3 import InfosG3
+    from infos import Register

 logger = logging.getLogger('msg')

@@ -71,12 +75,23 @@ class Talent(Message):
        self.modbus_elms = 0    # for unit tests
        self.node_id = 'G3'     # will be overwritten in __set_serial_no
        self.mb_timer = Timer(self.mb_timout_cb, self.node_id)
+        self.mb_timeout = self.MB_REGULAR_TIMEOUT
+        self.mb_start_timeout = self.MB_START_TIMEOUT
+        self.modbus_polling = False

    '''
    Our puplic methods
    '''
    def close(self) -> None:
        logging.debug('Talent.close()')
+        if self.server_side:
+            # set inverter state to offline, if output power is very low
+            logging.debug('close power: '
+                          f'{self.db.get_db_value(Register.OUTPUT_POWER, -1)}')
+            if self.db.get_db_value(Register.OUTPUT_POWER, 999) < 2:
+                self.db.set_db_def_value(Register.INVERTER_STATUS, 0)
+                self.new_data['env'] = True
+
        # we have references to methods of this class in self.switch
        # so we have to erase self.switch, otherwise this instance can't be
        # deallocated by the garbage collector ==> we get a memory leak
@@ -98,6 +113,7 @@ class Talent(Message):
                inv = inverters[serial_no]
                self.node_id = inv['node_id']
                self.sug_area = inv['suggested_area']
+                self.modbus_polling = inv['modbus_polling']
                logger.debug(f'SerialNo {serial_no} allowed! area:{self.sug_area}')  # noqa: E501
                self.db.set_pv_module_details(inv)
            else:
@@ -113,37 +129,43 @@ class Talent(Message):
            self.unique_id = serial_no

    def read(self) -> float:
+        '''process all received messages in the _recv_buffer'''
        self._read()
+        while True:
+            if not self.header_valid:
+                self.__parse_header(self._recv_buffer, len(self._recv_buffer))

-        if not self.header_valid:
-            self.__parse_header(self._recv_buffer, len(self._recv_buffer))
+            if self.header_valid and \
+               len(self._recv_buffer) >= (self.header_len + self.data_len):
+                if self.state == State.init:
+                    self.state = State.received     # received 1st package

-        if self.header_valid and len(self._recv_buffer) >= (self.header_len +
-                                                            self.data_len):
-            if self.state == State.init:
-                self.state = State.received     # received 1st package
+                log_lvl = self.log_lvl.get(self.msg_id, logging.WARNING)
+                if callable(log_lvl):
+                    log_lvl = log_lvl()

-            log_lvl = self.log_lvl.get(self.msg_id, logging.WARNING)
-            if callable(log_lvl):
-                log_lvl = log_lvl()
+                hex_dump_memory(log_lvl, f'Received from {self.addr}:'
+                                f' BufLen: {len(self._recv_buffer)}'
+                                f' HdrLen: {self.header_len}'
+                                f' DtaLen: {self.data_len}',
+                                self._recv_buffer, len(self._recv_buffer))

-            hex_dump_memory(log_lvl, f'Received from {self.addr}:',
-                            self._recv_buffer, self.header_len+self.data_len)
+                self.__set_serial_no(self.id_str.decode("utf-8"))
+                self.__dispatch_msg()
+                self.__flush_recv_msg()
+            else:
+                return 0  # don not wait before sending a response

-            self.__set_serial_no(self.id_str.decode("utf-8"))
-            self.__dispatch_msg()
-            self.__flush_recv_msg()
-        return 0.5  # wait 500ms before sending a response
-
-    def forward(self, buffer, buflen) -> None:
+    def forward(self) -> None:
+        '''add the actual receive msg to the forwarding queue'''
        tsun = Config.get('tsun')
        if tsun['enabled']:
-            self._forward_buffer = buffer[:buflen]
+            buffer = self._recv_buffer
+            buflen = self.header_len+self.data_len
+            self._forward_buffer += buffer[:buflen]
            hex_dump_memory(logging.DEBUG, 'Store for forwarding:',
                            buffer, buflen)

-            self.__parse_header(self._forward_buffer,
-                                len(self._forward_buffer))
            fnc = self.switch.get(self.msg_id, self.msg_unknown)
            logger.info(self.__flow_str(self.server_side, 'forwrd') +
                        f' Ctl: {int(self.ctrl):#02x} Msg: {fnc.__name__!r}')
@@ -177,13 +199,13 @@ class Talent(Message):
        self._send_modbus_cmd(func, addr, val, log_lvl)

    def mb_timout_cb(self, exp_cnt):
-        self.mb_timer.start(self.MB_REGULAR_TIMEOUT)
+        self.mb_timer.start(self.mb_timeout)

-        if 0 == (exp_cnt % 30):
+        if 2 == (exp_cnt % 30):
            # logging.info("Regular Modbus Status request")
-            self._send_modbus_cmd(Modbus.READ_REGS, 0x2007, 2, logging.DEBUG)
+            self._send_modbus_cmd(Modbus.READ_REGS, 0x2000, 96, logging.DEBUG)
        else:
-            self._send_modbus_cmd(Modbus.READ_REGS, 0x3008, 21, logging.DEBUG)
+            self._send_modbus_cmd(Modbus.READ_REGS, 0x3000, 48, logging.DEBUG)

    def _init_new_client_conn(self) -> bool:
        contact_name = self.contact_name
@@ -218,6 +240,8 @@ class Talent(Message):
        return switch.get(type, '???')

    def _timestamp(self):   # pragma: no cover
+        '''returns timestamp fo the inverter as localtime
+        since 1.1.1970 in msec'''
        if False:
            # utc as epoche
            ts = time.time()
@@ -226,23 +250,37 @@ class Talent(Message):
            ts = (datetime.now() - datetime(1970, 1, 1)).total_seconds()
        return round(ts*1000)

+    def _utcfromts(self, ts: float):
+        '''converts inverter timestamp into unix time (epoche)'''
+        dt = datetime.fromtimestamp(ts/1000, pytz.UTC). \
+            replace(tzinfo=get_localzone())
+        return dt.timestamp()
+
+    def _utc(self):   # pragma: no cover
+        '''returns unix time (epoche)'''
+        return datetime.now().timestamp()
+
    def _update_header(self, _forward_buffer):
        '''update header for message before forwarding,
        add time offset to timestamp'''
        _len = len(_forward_buffer)
-        result = struct.unpack_from('!lB', _forward_buffer, 0)
-        id_len = result[1]    # len of variable id string
-        if _len < 2*id_len + 21:
-            return
+        ofs = 0
+        while ofs < _len:
+            result = struct.unpack_from('!lB', _forward_buffer, 0)
+            msg_len = 4 + result[0]
+            id_len = result[1]    # len of variable id string
+            if _len < 2*id_len + 21:
+                return

-        result = struct.unpack_from('!B', _forward_buffer, id_len+6)
-        msg_code = result[0]
-        if msg_code == 0x71 or msg_code == 0x04:
-            result = struct.unpack_from('!q', _forward_buffer, 13+2*id_len)
-            ts = result[0] + self.ts_offset
-            logger.debug(f'offset: {self.ts_offset:08x}'
-                         f'  proxy-time: {ts:08x}')
-            struct.pack_into('!q', _forward_buffer, 13+2*id_len, ts)
+            result = struct.unpack_from('!B', _forward_buffer, id_len+6)
+            msg_code = result[0]
+            if msg_code == 0x71 or msg_code == 0x04:
+                result = struct.unpack_from('!q', _forward_buffer, 13+2*id_len)
+                ts = result[0] + self.ts_offset
+                logger.debug(f'offset: {self.ts_offset:08x}'
+                             f'  proxy-time: {ts:08x}')
+                struct.pack_into('!q', _forward_buffer, 13+2*id_len, ts)
+            ofs += msg_len

    # check if there is a complete header in the buffer, parse it
    # and set
@@ -321,12 +359,12 @@ class Talent(Message):
            elif self.await_conn_resp_cnt > 0:
                self.await_conn_resp_cnt -= 1
            else:
-                self.forward(self._recv_buffer, self.header_len+self.data_len)
+                self.forward()
            return
        else:
            logger.warning('Unknown Ctrl')
            self.inc_counter('Unknown_Ctrl')
-            self.forward(self._recv_buffer, self.header_len+self.data_len)
+            self.forward()

    def __process_contact_info(self) -> bool:
        result = struct.unpack_from('!B', self._recv_buffer, self.header_len)
@@ -348,8 +386,13 @@ class Talent(Message):
    def msg_get_time(self):
        if self.ctrl.is_ind():
            if self.data_len == 0:
-                self.state = State.pend     # block MODBUS cmds
-                self.mb_timer.start(self.MB_START_TIMEOUT)
+                if self.state == State.up:
+                    self.state = State.pend     # block MODBUS cmds
+                if (self.modbus_polling):
+                    self.mb_timer.start(self.mb_start_timeout)
+                    self.db.set_db_def_value(Register.POLLING_INTERVAL,
+                                             self.mb_timeout)
+
                ts = self._timestamp()
                logger.debug(f'time: {ts:08x}')
                self.__build_header(0x91)
@@ -369,7 +412,7 @@ class Talent(Message):
            logger.warning('Unknown Ctrl')
            self.inc_counter('Unknown_Ctrl')

-        self.forward(self._recv_buffer, self.header_len+self.data_len)
+        self.forward()

    def parse_msg_header(self):
        result = struct.unpack_from('!lB', self._recv_buffer, self.header_len)
@@ -383,11 +426,12 @@ class Talent(Message):
        result = struct.unpack_from(f'!{id_len+1}pBq', self._recv_buffer,
                                    self.header_len + 4)

+        timestamp = result[2]
        logger.debug(f'ID: {result[0]}  B: {result[1]}')
-        logger.debug(f'time: {result[2]:08x}')
+        logger.debug(f'time: {timestamp:08x}')
        # logger.info(f'time: {datetime.utcfromtimestamp(result[2]).strftime(
        # "%Y-%m-%d %H:%M:%S")}')
-        return msg_hdr_len
+        return msg_hdr_len, timestamp

    def msg_collector_data(self):
        if self.ctrl.is_ind():
@@ -402,7 +446,7 @@ class Talent(Message):
            logger.warning('Unknown Ctrl')
            self.inc_counter('Unknown_Ctrl')

-        self.forward(self._recv_buffer, self.header_len+self.data_len)
+        self.forward()

    def msg_inverter_data(self):
        if self.ctrl.is_ind():
@@ -418,14 +462,15 @@ class Talent(Message):
            logger.warning('Unknown Ctrl')
            self.inc_counter('Unknown_Ctrl')

-        self.forward(self._recv_buffer, self.header_len+self.data_len)
+        self.forward()

    def __process_data(self):
-        msg_hdr_len = self.parse_msg_header()
+        msg_hdr_len, ts = self.parse_msg_header()

        for key, update in self.db.parse(self._recv_buffer, self.header_len
                                         + msg_hdr_len, self.node_id):
            if update:
+                self._set_mqtt_timestamp(key, self._utcfromts(ts))
                self.new_data[key] = True

    def msg_ota_update(self):
@@ -436,7 +481,7 @@ class Talent(Message):
        else:
            logger.warning('Unknown Ctrl')
            self.inc_counter('Unknown_Ctrl')
-        self.forward(self._recv_buffer, self.header_len+self.data_len)
+        self.forward()

    def parse_modbus_header(self):

@@ -481,17 +526,18 @@ class Talent(Message):
                    hdr_len:],
                    self.node_id):
                if update:
+                    self._set_mqtt_timestamp(key, self._utc())
                    self.new_data[key] = True
                self.modbus_elms += 1          # count for unit tests
        else:
            logger.warning('Unknown Ctrl')
            self.inc_counter('Unknown_Ctrl')
-            self.forward(self._recv_buffer, self.header_len+self.data_len)
+            self.forward()

    def msg_forward(self):
-        self.forward(self._recv_buffer, self.header_len+self.data_len)
+        self.forward()

    def msg_unknown(self):
        logger.warning(f"Unknow Msg: ID:{self.msg_id}")
        self.inc_counter('Unknown_Msg')
-        self.forward(self._recv_buffer, self.header_len+self.data_len)
+        self.forward()
--- a/app/src/gen3plus/connection_g3p.py
+++ b/app/src/gen3plus/connection_g3p.py
@@ -11,9 +11,10 @@ class ConnectionG3P(AsyncStream, SolarmanV5):

    def __init__(self, reader: StreamReader, writer: StreamWriter,
                 addr, remote_stream: 'ConnectionG3P',
-                 server_side: bool) -> None:
+                 server_side: bool,
+                 client_mode: bool) -> None:
        AsyncStream.__init__(self, reader, writer, addr)
-        SolarmanV5.__init__(self, server_side)
+        SolarmanV5.__init__(self, server_side, client_mode)

        self.remoteStream: 'ConnectionG3P' = remote_stream

--- a/app/src/gen3plus/infos_g3p.py
+++ b/app/src/gen3plus/infos_g3p.py
@@ -3,9 +3,9 @@ import struct
 from typing import Generator

 if __name__ == "app.src.gen3plus.infos_g3p":
-    from app.src.infos import Infos, Register
+    from app.src.infos import Infos, Register, ProxyMode
 else:  # pragma: no cover
-    from infos import Infos, Register
+    from infos import Infos, Register, ProxyMode


 class RegisterMap:
@@ -14,15 +14,15 @@ class RegisterMap:
    __slots__ = ()
    map = {
        # 0x41020007: {'reg': Register.DEVICE_SNR,           'fmt': '<L'},                 # noqa: E501
-        0x41020018: {'reg': Register.DATA_UP_INTERVAL,     'fmt': '<B', 'ratio':   60},  # noqa: E501
-        0x41020019: {'reg': Register.COLLECT_INTERVAL,     'fmt': '<B', 'eval': 'round(result/60)'},  # noqa: E501
+        0x41020018: {'reg': Register.DATA_UP_INTERVAL,     'fmt': '<B', 'ratio':   60, 'dep': ProxyMode.SERVER},  # noqa: E501
+        0x41020019: {'reg': Register.COLLECT_INTERVAL,     'fmt': '<B', 'eval': 'round(result/60)', 'dep': ProxyMode.SERVER},  # noqa: E501
        0x4102001a: {'reg': Register.HEARTBEAT_INTERVAL,   'fmt': '<B', 'ratio':    1},  # noqa: E501
-        0x4102001c: {'reg': Register.SIGNAL_STRENGTH,      'fmt': '<B', 'ratio':    1},  # noqa: E501
+        0x4102001c: {'reg': Register.SIGNAL_STRENGTH,      'fmt': '<B', 'ratio':    1, 'dep': ProxyMode.SERVER},  # noqa: E501
        0x4102001e: {'reg': Register.CHIP_MODEL,           'fmt': '!40s'},               # noqa: E501
        0x4102004c: {'reg': Register.IP_ADDRESS,           'fmt': '!16s'},               # noqa: E501
        0x41020064: {'reg': Register.COLLECTOR_FW_VERSION, 'fmt': '!40s'},               # noqa: E501

-        0x4201001c: {'reg': Register.POWER_ON_TIME,        'fmt': '<H', 'ratio':    1},  # noqa: E501
+        0x4201001c: {'reg': Register.POWER_ON_TIME,        'fmt': '<H', 'ratio':    1, 'dep': ProxyMode.SERVER},  # noqa: E501
        0x42010020: {'reg': Register.SERIAL_NUMBER,        'fmt': '!16s'},               # noqa: E501
        0x420100c0: {'reg': Register.INVERTER_STATUS,      'fmt': '!H'},                 # noqa: E501
        0x420100d0: {'reg': Register.VERSION,              'fmt': '!H', 'eval': "f'V{(result>>12)}.{(result>>8)&0xf}.{(result>>4)&0xf}{result&0xf}'"},  # noqa: E501
@@ -56,19 +56,31 @@ class RegisterMap:
        0x42010110: {'reg': Register.PV4_DAILY_GENERATION, 'fmt': '!H', 'ratio': 0.01},  # noqa: E501
        0x42010112: {'reg': Register.PV4_TOTAL_GENERATION, 'fmt': '!L', 'ratio': 0.01},  # noqa: E501
        0x42010126: {'reg': Register.MAX_DESIGNED_POWER,   'fmt': '!H', 'ratio':    1},  # noqa: E501
-        0x42010170: {'reg': Register.NO_INPUTS,            'fmt': '!B'},                 # noqa: E501

+        0xffffff01: {'reg': Register.OUTPUT_COEFFICIENT},
+        0xffffff02: {'reg': Register.POLLING_INTERVAL},
        # 0x4281001c: {'reg': Register.POWER_ON_TIME,        'fmt': '<H', 'ratio':    1},  # noqa: E501

    }


 class InfosG3P(Infos):
-    def __init__(self):
+    def __init__(self, client_mode: bool):
        super().__init__()
+        self.client_mode = client_mode
        self.set_db_def_value(Register.MANUFACTURER, 'TSUN')
        self.set_db_def_value(Register.EQUIPMENT_MODEL, 'TSOL-MSxx00')
        self.set_db_def_value(Register.CHIP_TYPE, 'IGEN TECH')
+        self.set_db_def_value(Register.NO_INPUTS, 4)
+
+    def __hide_topic(self, row: dict) -> bool:
+        if 'dep' in row:
+            mode = row['dep']
+            if self.client_mode:
+                return mode != ProxyMode.CLIENT
+            else:
+                return mode != ProxyMode.SERVER
+        return False

    def ha_confs(self, ha_prfx: str, node_id: str, snr: str,
                 sug_area: str = '') \
@@ -84,7 +96,10 @@ class InfosG3P(Infos):
        # iterate over RegisterMap.map and get the register values
        for row in RegisterMap.map.values():
            info_id = row['reg']
-            res = self.ha_conf(info_id, ha_prfx, node_id, snr, False, sug_area)  # noqa: E501
+            if self.__hide_topic(row):
+                res = self.ha_remove(info_id, node_id, snr)  # noqa: E501
+            else:
+                res = self.ha_conf(info_id, ha_prfx, node_id, snr, False, sug_area)  # noqa: E501
            if res:
                yield res

--- a/app/src/gen3plus/inverter_g3p.py
+++ b/app/src/gen3plus/inverter_g3p.py
@@ -45,8 +45,10 @@ class InverterG3P(Inverter, ConnectionG3P):
                 destroyed
    '''

-    def __init__(self, reader: StreamReader, writer: StreamWriter, addr):
-        super().__init__(reader, writer, addr, None, True)
+    def __init__(self, reader: StreamReader, writer: StreamWriter, addr,
+                 client_mode: bool = False):
+        super().__init__(reader, writer, addr, None,
+                         server_side=True, client_mode=client_mode)
        self.__ha_restarts = -1

    async def async_create_remote(self) -> None:
@@ -61,7 +63,8 @@ class InverterG3P(Inverter, ConnectionG3P):
            connect = asyncio.open_connection(host, port)
            reader, writer = await connect
            self.remoteStream = ConnectionG3P(reader, writer, addr, self,
-                                              False)
+                                              server_side=False,
+                                              client_mode=False)
            logging.info(f'[{self.remoteStream.node_id}:'
                         f'{self.remoteStream.conn_no}] '
                         f'Connected to {addr}')
--- a/app/src/gen3plus/solarman_v5.py
+++ b/app/src/gen3plus/solarman_v5.py
@@ -54,18 +54,24 @@ class SolarmanV5(Message):
    AT_CMD = 1
    MB_RTU_CMD = 2
    MB_START_TIMEOUT = 40
+    '''start delay for Modbus polling in server mode'''
    MB_REGULAR_TIMEOUT = 60
+    '''regular Modbus polling time in server mode'''
+    MB_CLIENT_DATA_UP = 30
+    '''Data up time in client mode'''

-    def __init__(self, server_side: bool):
+    def __init__(self, server_side: bool, client_mode: bool):
        super().__init__(server_side, self.send_modbus_cb, mb_timeout=5)

        self.header_len = 11  # overwrite construcor in class Message
        self.control = 0
        self.seq = Sequence(server_side)
        self.snr = 0
-        self.db = InfosG3P()
+        self.db = InfosG3P(client_mode)
        self.time_ofs = 0
        self.forward_at_cmd_resp = False
+        self.no_forwarding = False
+        '''not allowed to connect to TSUN cloud by connection type'''
        self.switch = {

            0x4210: self.msg_data_ind,   # real time data
@@ -128,12 +134,24 @@ class SolarmanV5(Message):

        self.node_id = 'G3P'  # will be overwritten in __set_serial_no
        self.mb_timer = Timer(self.mb_timout_cb, self.node_id)
+        self.mb_timeout = self.MB_REGULAR_TIMEOUT
+        self.mb_start_timeout = self.MB_START_TIMEOUT
+        '''timer value for next Modbus polling request'''
+        self.modbus_polling = False

    '''
    Our puplic methods
    '''
    def close(self) -> None:
        logging.debug('Solarman.close()')
+        if self.server_side:
+            # set inverter state to offline, if output power is very low
+            logging.debug('close power: '
+                          f'{self.db.get_db_value(Register.OUTPUT_POWER, -1)}')
+            if self.db.get_db_value(Register.OUTPUT_POWER, 999) < 2:
+                self.db.set_db_def_value(Register.INVERTER_STATUS, 0)
+                self.new_data['env'] = True
+
        # we have references to methods of this class in self.switch
        # so we have to erase self.switch, otherwise this instance can't be
        # deallocated by the garbage collector ==> we get a memory leak
@@ -143,6 +161,31 @@ class SolarmanV5(Message):
        self.mb_timer.close()
        super().close()

+    async def send_start_cmd(self, snr: int, host: str,
+                             start_timeout=MB_CLIENT_DATA_UP):
+        self.no_forwarding = True
+        self.snr = snr
+        self.__set_serial_no(snr)
+        self.mb_timeout = start_timeout
+        self.db.set_db_def_value(Register.IP_ADDRESS, host)
+        self.db.set_db_def_value(Register.POLLING_INTERVAL,
+                                 self.mb_timeout)
+        self.db.set_db_def_value(Register.HEARTBEAT_INTERVAL,
+                                 120)  # fixme
+        self.new_data['controller'] = True
+
+        self.state = State.up
+        self._send_modbus_cmd(Modbus.READ_REGS, 0x3000, 48, logging.DEBUG)
+        self.mb_timer.start(self.mb_timeout)
+
+    def new_state_up(self):
+        if self.state is not State.up:
+            self.state = State.up
+            if (self.modbus_polling):
+                self.mb_timer.start(self.mb_start_timeout)
+                self.db.set_db_def_value(Register.POLLING_INTERVAL,
+                                         self.mb_timeout)
+
    def __set_serial_no(self, snr: int):
        serial_no = str(snr)
        if self.unique_id == serial_no:
@@ -159,6 +202,7 @@ class SolarmanV5(Message):
                    found = True
                    self.node_id = inv['node_id']
                    self.sug_area = inv['suggested_area']
+                    self.modbus_polling = inv['modbus_polling']
                    logger.debug(f'SerialNo {serial_no} allowed! area:{self.sug_area}')  # noqa: E501
                    self.db.set_pv_module_details(inv)

@@ -175,37 +219,41 @@ class SolarmanV5(Message):
            self.unique_id = serial_no

    def read(self) -> float:
+        '''process all received messages in the _recv_buffer'''
        self._read()
+        while True:
+            if not self.header_valid:
+                self.__parse_header(self._recv_buffer, len(self._recv_buffer))

-        if not self.header_valid:
-            self.__parse_header(self._recv_buffer, len(self._recv_buffer))
+            if self.header_valid and len(self._recv_buffer) >= \
+               (self.header_len + self.data_len+2):
+                log_lvl = self.log_lvl.get(self.control, logging.WARNING)
+                if callable(log_lvl):
+                    log_lvl = log_lvl()
+                hex_dump_memory(log_lvl, f'Received from {self.addr}:',
+                                self._recv_buffer, self.header_len +
+                                self.data_len+2)
+                if self.__trailer_is_ok(self._recv_buffer, self.header_len
+                                        + self.data_len + 2):
+                    if self.state == State.init:
+                        self.state = State.received

-        if self.header_valid and len(self._recv_buffer) >= (self.header_len +
-                                                            self.data_len+2):
-            log_lvl = self.log_lvl.get(self.control, logging.WARNING)
-            if callable(log_lvl):
-                log_lvl = log_lvl()
-            hex_dump_memory(log_lvl, f'Received from {self.addr}:',
-                            self._recv_buffer, self.header_len+self.data_len+2)
-            if self.__trailer_is_ok(self._recv_buffer, self.header_len
-                                    + self.data_len + 2):
-                if self.state == State.init:
-                    self.state = State.received
-
-                self.__set_serial_no(self.snr)
-                self.__dispatch_msg()
-            self.__flush_recv_msg()
-        return 0  # wait 0s before sending a response
+                    self.__set_serial_no(self.snr)
+                    self.__dispatch_msg()
+                self.__flush_recv_msg()
+            else:
+                return 0  # wait 0s before sending a response

    def forward(self, buffer, buflen) -> None:
+        '''add the actual receive msg to the forwarding queue'''
+        if self.no_forwarding:
+            return
        tsun = Config.get('solarman')
        if tsun['enabled']:
-            self._forward_buffer = buffer[:buflen]
+            self._forward_buffer += buffer[:buflen]
            hex_dump_memory(logging.DEBUG, 'Store for forwarding:',
                            buffer, buflen)

-            self.__parse_header(self._forward_buffer,
-                                len(self._forward_buffer))
            fnc = self.switch.get(self.control, self.msg_unknown)
            logger.info(self.__flow_str(self.server_side, 'forwrd') +
                        f' Ctl: {int(self.control):#04x}'
@@ -213,12 +261,6 @@ class SolarmanV5(Message):
        return

    def _init_new_client_conn(self) -> bool:
-        # self.__build_header(0x91)
-        # self._send_buffer += struct.pack(f'!{len(contact_name)+1}p'
-        #                                  f'{len(contact_mail)+1}p',
-        #                                  contact_name, contact_mail)
-
-        # self.__finish_send_msg()
        return False

    '''
@@ -320,13 +362,17 @@ class SolarmanV5(Message):
        '''update header for message before forwarding,
        set sequence and checksum'''
        _len = len(_forward_buffer)
-        struct.pack_into('<H', _forward_buffer, 1,
-                         _len-13)
-        struct.pack_into('<H', _forward_buffer, 5,
-                         self.seq.get_send())
+        ofs = 0
+        while ofs < _len:
+            result = struct.unpack_from('<BH', _forward_buffer, ofs)
+            data_len = result[1]    # len of variable id string

-        check = sum(_forward_buffer[1:_len-2]) & 0xff
-        struct.pack_into('<B', _forward_buffer, _len-2, check)
+            struct.pack_into('<H', _forward_buffer, ofs+5,
+                             self.seq.get_send())
+
+            check = sum(_forward_buffer[ofs+1:ofs+data_len+11]) & 0xff
+            struct.pack_into('<B', _forward_buffer, ofs+data_len+11, check)
+            ofs += (13 + data_len)

    def __dispatch_msg(self) -> None:
        fnc = self.switch.get(self.control, self.msg_unknown)
@@ -378,13 +424,13 @@ class SolarmanV5(Message):
        self._send_modbus_cmd(func, addr, val, log_lvl)

    def mb_timout_cb(self, exp_cnt):
-        self.mb_timer.start(self.MB_REGULAR_TIMEOUT)
+        self.mb_timer.start(self.mb_timeout)

-        self._send_modbus_cmd(Modbus.READ_REGS, 0x3008, 21, logging.DEBUG)
+        self._send_modbus_cmd(Modbus.READ_REGS, 0x3000, 48, logging.DEBUG)

-        if 0 == (exp_cnt % 30):
+        if 1 == (exp_cnt % 30):
            # logging.info("Regular Modbus Status request")
-            self._send_modbus_cmd(Modbus.READ_REGS, 0x2007, 2, logging.DEBUG)
+            self._send_modbus_cmd(Modbus.READ_REGS, 0x2000, 96, logging.DEBUG)

    def at_cmd_forbidden(self, cmd: str, connection: str) -> bool:
        return not cmd.startswith(tuple(self.at_acl[connection]['allow'])) or \
@@ -435,7 +481,7 @@ class SolarmanV5(Message):
            logger.info(f'Model: {Model}')
            self.db.set_db_def_value(Register.EQUIPMENT_MODEL, Model)

-    def __process_data(self, ftype):
+    def __process_data(self, ftype, ts):
        inv_update = False
        msg_type = self.control >> 8
        for key, update in self.db.parse(self._recv_buffer, msg_type, ftype,
@@ -443,6 +489,7 @@ class SolarmanV5(Message):
            if update:
                if key == 'inverter':
                    inv_update = True
+                self._set_mqtt_timestamp(key, ts)
                self.new_data[key] = True

        if inv_update:
@@ -459,16 +506,18 @@ class SolarmanV5(Message):
        data = self._recv_buffer[self.header_len:]
        result = struct.unpack_from('<BLLL', data, 0)
        ftype = result[0]  # always 2
-        # total = result[1]
+        total = result[1]
        tim = result[2]
        res = result[3]  # always zero
        logger.info(f'frame type:{ftype:02x}'
                    f' timer:{tim:08x}s  null:{res}')
-        # if self.time_ofs:
-        #     dt = datetime.fromtimestamp(total + self.time_ofs)
-        #     logger.info(f'ts: {dt.strftime("%Y-%m-%d %H:%M:%S")}')
-
-        self.__process_data(ftype)
+        if self.time_ofs:
+            #     dt = datetime.fromtimestamp(total + self.time_ofs)
+            #     logger.info(f'ts: {dt.strftime("%Y-%m-%d %H:%M:%S")}')
+            ts = total + self.time_ofs
+        else:
+            ts = None
+        self.__process_data(ftype, ts)
        self.__forward_msg()
        self.__send_ack_rsp(0x1110, ftype)

@@ -476,7 +525,7 @@ class SolarmanV5(Message):
        data = self._recv_buffer
        result = struct.unpack_from('<BHLLLHL', data, self.header_len)
        ftype = result[0]  # 1 or 0x81
-        # total = result[2]
+        total = result[2]
        tim = result[3]
        if 1 == ftype:
            self.time_ofs = result[4]
@@ -484,16 +533,17 @@ class SolarmanV5(Message):
        cnt = result[6]
        logger.info(f'ftype:{ftype:02x} timer:{tim:08x}s'
                    f' ??: {unkn:04x} cnt:{cnt}')
-        # if self.time_ofs:
-        #     dt = datetime.fromtimestamp(total + self.time_ofs)
-        #     logger.info(f'ts: {dt.strftime("%Y-%m-%d %H:%M:%S")}')
+        if self.time_ofs:
+            #     dt = datetime.fromtimestamp(total + self.time_ofs)
+            #     logger.info(f'ts: {dt.strftime("%Y-%m-%d %H:%M:%S")}')
+            ts = total + self.time_ofs
+        else:
+            ts = None

-        self.__process_data(ftype)
+        self.__process_data(ftype, ts)
        self.__forward_msg()
        self.__send_ack_rsp(0x1210, ftype)
-        if self.state is not State.up:
-            self.state = State.up
-            self.mb_timer.start(self.MB_START_TIMEOUT)
+        self.new_state_up()

    def msg_sync_start(self):
        data = self._recv_buffer[self.header_len:]
@@ -533,7 +583,7 @@ class SolarmanV5(Message):

        self.__forward_msg()

-    def publish_mqtt(self, key, data):
+    def publish_mqtt(self, key, data):  # pragma: no cover
        asyncio.ensure_future(
            self.mqtt.publish(key, data))

@@ -576,6 +626,7 @@ class SolarmanV5(Message):
                    if update:
                        if key == 'inverter':
                            inv_update = True
+                        self._set_mqtt_timestamp(key, self._timestamp())
                        self.new_data[key] = True

                if inv_update:
@@ -590,9 +641,7 @@ class SolarmanV5(Message):

        self.__forward_msg()
        self.__send_ack_rsp(0x1710, ftype)
-        if self.state is not State.up:
-            self.state = State.up
-            self.mb_timer.start(self.MB_START_TIMEOUT)
+        self.new_state_up()

    def msg_sync_end(self):
        data = self._recv_buffer[self.header_len:]
--- a/app/src/infos.py
+++ b/app/src/infos.py
@@ -5,6 +5,11 @@ from enum import Enum
 from typing import Generator


+class ProxyMode(Enum):
+    SERVER = 1
+    CLIENT = 2
+
+
 class Register(Enum):
    COLLECTOR_FW_VERSION = 1
    CHIP_TYPE = 2
@@ -18,6 +23,7 @@ class Register(Enum):
    EQUIPMENT_MODEL = 24
    NO_INPUTS = 25
    MAX_DESIGNED_POWER = 26
+    OUTPUT_COEFFICIENT = 27
    INVERTER_CNT = 50
    UNKNOWN_SNR = 51
    UNKNOWN_MSG = 52
@@ -89,6 +95,7 @@ class Register(Enum):
    CONNECT_COUNT = 405
    HEARTBEAT_INTERVAL = 406
    IP_ADDRESS = 407
+    POLLING_INTERVAL = 408
    EVENT_401 = 500
    EVENT_402 = 501
    EVENT_403 = 502
@@ -105,6 +112,9 @@ class Register(Enum):
    EVENT_414 = 513
    EVENT_415 = 514
    EVENT_416 = 515
+    TS_INPUT = 600
+    TS_GRID = 601
+    TS_TOTAL = 602
    VALUE_1 = 9000
    TEST_REG1 = 10000
    TEST_REG2 = 10001
@@ -177,15 +187,29 @@ class Infos:
    }

    __comm_type_val_tpl = "{%set com_types = ['n/a','Wi-Fi', 'G4', 'G5', 'GPRS'] %}{{com_types[value_json['Communication_Type']|int(0)]|default(value_json['Communication_Type'])}}"    # noqa: E501
-    __status_type_val_tpl = "{%set inv_status = ['n/a', 'Online', 'Offline'] %}{{inv_status[value_json['Inverter_Status']|int(0)]|default(value_json['Inverter_Status'])}}"    # noqa: E501
+    __status_type_val_tpl = "{%set inv_status = ['Off-line', 'On-grid', 'Off-grid'] %}{{inv_status[value_json['Inverter_Status']|int(0)]|default(value_json['Inverter_Status'])}}"    # noqa: E501
+    __rated_power_val_tpl = "{% if 'Rated_Power' in value_json and value_json['Rated_Power'] != None %}{{value_json['Rated_Power']|string() +' W'}}{% else %}{{ this.state }}{% endif %}"  # noqa: E501
+    __designed_power_val_tpl = '''
+{% if 'Max_Designed_Power' in value_json and
+      value_json['Max_Designed_Power'] != None %}
+  {% if value_json['Max_Designed_Power'] | int(0xffff) < 0x8000 %}
+    {{value_json['Max_Designed_Power']|string() +' W'}}
+  {% else %}
+    n/a
+  {% endif %}
+{% else %}
+  {{ this.state }}
+{% endif %}
+'''
+    __output_coef_val_tpl = "{% if 'Output_Coefficient' in value_json and value_json['Output_Coefficient'] != None %}{{value_json['Output_Coefficient']|string() +' %'}}{% else %}{{ this.state }}{% endif %}"  # noqa: E501

    __info_defs = {
        # collector values used for device registration:
        Register.COLLECTOR_FW_VERSION:  {'name': ['collector', 'Collector_Fw_Version'],       'level': logging.INFO,  'unit': ''},  # noqa: E501
-        Register.CHIP_TYPE:  {'name': ['collector', 'Chip_Type'],                  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.CHIP_MODEL: {'name': ['collector', 'Chip_Model'],                 'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.TRACE_URL:  {'name': ['collector', 'Trace_URL'],                  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.LOGGER_URL: {'name': ['collector', 'Logger_URL'],                 'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.CHIP_TYPE:  {'name': ['collector', 'Chip_Type'],        'singleton': False,  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.CHIP_MODEL: {'name': ['collector', 'Chip_Model'],       'singleton': False,  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.TRACE_URL:  {'name': ['collector', 'Trace_URL'],        'singleton': False,  'level': logging.DEBUG, 'unit': ''},  # noqa: E501
+        Register.LOGGER_URL: {'name': ['collector', 'Logger_URL'],       'singleton': False,  'level': logging.DEBUG, 'unit': ''},  # noqa: E501

        # inverter values used for device registration:
        Register.PRODUCT_NAME:    {'name': ['inverter', 'Product_Name'],           'level': logging.DEBUG, 'unit': ''},  # noqa: E501
@@ -194,9 +218,9 @@ class Infos:
        Register.SERIAL_NUMBER:   {'name': ['inverter', 'Serial_Number'],          'level': logging.DEBUG, 'unit': ''},  # noqa: E501
        Register.EQUIPMENT_MODEL: {'name': ['inverter', 'Equipment_Model'],        'level': logging.DEBUG, 'unit': ''},  # noqa: E501
        Register.NO_INPUTS:       {'name': ['inverter', 'No_Inputs'],              'level': logging.DEBUG, 'unit': ''},  # noqa: E501
-        Register.MAX_DESIGNED_POWER: {'name': ['inverter',  'Max_Designed_Power'], 'level': logging.INFO, 'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': None,          'stat_cla': None,          'id': 'designed_power_', 'fmt': '| string + " W"', 'name': 'Max Designed Power', 'icon': 'mdi:lightning-bolt', 'ent_cat': 'diagnostic'}},  # noqa: E501
-        Register.RATED_POWER:     {'name': ['inverter',  'Rated_Power'],           'level': logging.DEBUG, 'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': None,          'stat_cla': None,          'id': 'rated_power_', 'fmt': '| string + " W"', 'name': 'Rated Power', 'icon': 'mdi:lightning-bolt', 'ent_cat': 'diagnostic'}},  # noqa: E501
-
+        Register.MAX_DESIGNED_POWER: {'name': ['inverter',  'Max_Designed_Power'], 'level': logging.INFO,  'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': None, 'stat_cla': None, 'id': 'designed_power_', 'val_tpl': __designed_power_val_tpl, 'name': 'Max Designed Power', 'icon': 'mdi:lightning-bolt', 'ent_cat': 'diagnostic'}},  # noqa: E501
+        Register.RATED_POWER:        {'name': ['inverter',  'Rated_Power'],        'level': logging.DEBUG, 'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': None, 'stat_cla': None, 'id': 'rated_power_',    'val_tpl': __rated_power_val_tpl,    'name': 'Rated Power',        'icon': 'mdi:lightning-bolt', 'ent_cat': 'diagnostic'}},  # noqa: E501
+        Register.OUTPUT_COEFFICIENT: {'name': ['inverter',  'Output_Coefficient'], 'level': logging.INFO,  'unit': '%',    'ha': {'dev': 'inverter', 'dev_cla': None, 'stat_cla': None, 'id': 'output_coef_',    'val_tpl': __output_coef_val_tpl,    'name': 'Output Coefficient', 'icon': 'mdi:lightning-bolt', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.PV1_MANUFACTURER: {'name': ['inverter', 'PV1_Manufacturer'],      'level': logging.DEBUG, 'unit': ''},  # noqa: E501
        Register.PV1_MODEL:        {'name': ['inverter', 'PV1_Model'],             'level': logging.DEBUG, 'unit': ''},  # noqa: E501
        Register.PV2_MANUFACTURER: {'name': ['inverter', 'PV2_Manufacturer'],      'level': logging.DEBUG, 'unit': ''},  # noqa: E501
@@ -244,14 +268,16 @@ class Infos:
        Register.EVENT_416:  {'name': ['events', '416_'],                          'level': logging.DEBUG, 'unit': ''},  # noqa: E501

        # grid measures:
+        Register.TS_GRID:         {'name': ['grid', 'Timestamp'],                  'level': logging.INFO,  'unit': ''},  # noqa: E501
        Register.GRID_VOLTAGE:    {'name': ['grid', 'Voltage'],                    'level': logging.DEBUG, 'unit': 'V',    'ha': {'dev': 'inverter', 'dev_cla': 'voltage',     'stat_cla': 'measurement', 'id': 'out_volt_',  'fmt': '| float', 'name': 'Grid Voltage', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.GRID_CURRENT:    {'name': ['grid', 'Current'],                    'level': logging.DEBUG, 'unit': 'A',    'ha': {'dev': 'inverter', 'dev_cla': 'current',     'stat_cla': 'measurement', 'id': 'out_cur_',   'fmt': '| float', 'name': 'Grid Current', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.GRID_FREQUENCY:  {'name': ['grid', 'Frequency'],                  'level': logging.DEBUG, 'unit': 'Hz',   'ha': {'dev': 'inverter', 'dev_cla': 'frequency',   'stat_cla': 'measurement', 'id': 'out_freq_',  'fmt': '| float', 'name': 'Grid Frequency', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.OUTPUT_POWER:    {'name': ['grid', 'Output_Power'],               'level': logging.INFO,  'unit': 'W',    'ha': {'dev': 'inverter', 'dev_cla': 'power',       'stat_cla': 'measurement', 'id': 'out_power_', 'fmt': '| float', 'name': 'Power'}},  # noqa: E501
        Register.INVERTER_TEMP:   {'name': ['env',  'Inverter_Temp'],              'level': logging.DEBUG, 'unit': '°C',   'ha': {'dev': 'inverter', 'dev_cla': 'temperature', 'stat_cla': 'measurement', 'id': 'temp_',       'fmt': '| int', 'name': 'Temperature'}},  # noqa: E501
-        Register.INVERTER_STATUS: {'name': ['env',  'Inverter_Status'],            'level': logging.INFO,  'unit': '',     'ha': {'dev': 'inverter', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'inv_status_', 'name': 'Inverter Status', 'val_tpl': __status_type_val_tpl,          'icon': 'mdi:counter'}},  # noqa: E501
+        Register.INVERTER_STATUS: {'name': ['env',  'Inverter_Status'],            'level': logging.INFO,  'unit': '',     'ha': {'dev': 'inverter', 'comp': 'sensor', 'dev_cla': None, 'stat_cla': None, 'id': 'inv_status_', 'name': 'Inverter Status', 'val_tpl': __status_type_val_tpl,          'icon': 'mdi:power'}},  # noqa: E501

        # input measures:
+        Register.TS_INPUT:     {'name': ['input', 'Timestamp'],                    'level': logging.INFO,  'unit': ''},  # noqa: E501
        Register.PV1_VOLTAGE:  {'name': ['input', 'pv1', 'Voltage'],               'level': logging.DEBUG, 'unit': 'V',    'ha': {'dev': 'input_pv1', 'dev_cla': 'voltage', 'stat_cla': 'measurement', 'id': 'volt_pv1_',  'val_tpl': "{{ (value_json['pv1']['Voltage'] | float)}}", 'icon': 'mdi:gauge', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.PV1_CURRENT:  {'name': ['input', 'pv1', 'Current'],               'level': logging.DEBUG, 'unit': 'A',    'ha': {'dev': 'input_pv1', 'dev_cla': 'current', 'stat_cla': 'measurement', 'id': 'cur_pv1_',   'val_tpl': "{{ (value_json['pv1']['Current'] | float)}}", 'icon': 'mdi:gauge', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.PV1_POWER:    {'name': ['input', 'pv1', 'Power'],                 'level': logging.DEBUG, 'unit': 'W',    'ha': {'dev': 'input_pv1', 'dev_cla': 'power',   'stat_cla': 'measurement', 'id': 'power_pv1_', 'val_tpl': "{{ (value_json['pv1']['Power'] | float)}}"}},  # noqa: E501
@@ -283,6 +309,7 @@ class Infos:
        Register.PV6_DAILY_GENERATION:  {'name': ['input', 'pv6', 'Daily_Generation'],        'level': logging.DEBUG, 'unit': 'kWh',  'ha': {'dev': 'input_pv6', 'dev_cla': 'energy', 'stat_cla': 'total_increasing', 'id': 'daily_gen_pv6_', 'name': 'Daily Generation', 'val_tpl': "{{ (value_json['pv6']['Daily_Generation'] | float)}}", 'icon': 'mdi:solar-power-variant', 'must_incr': True}},  # noqa: E501
        Register.PV6_TOTAL_GENERATION:  {'name': ['input', 'pv6', 'Total_Generation'],        'level': logging.DEBUG, 'unit': 'kWh',  'ha': {'dev': 'input_pv6', 'dev_cla': 'energy', 'stat_cla': 'total',            'id': 'total_gen_pv6_', 'name': 'Total Generation', 'val_tpl': "{{ (value_json['pv6']['Total_Generation'] | float)}}", 'icon': 'mdi:solar-power', 'must_incr': True}},  # noqa: E501
        # total:
+        Register.TS_TOTAL:          {'name': ['total', 'Timestamp'],               'level': logging.INFO,  'unit': ''},  # noqa: E501
        Register.DAILY_GENERATION:  {'name': ['total', 'Daily_Generation'],        'level': logging.INFO,  'unit': 'kWh',  'ha': {'dev': 'inverter', 'dev_cla': 'energy', 'stat_cla': 'total_increasing', 'id': 'daily_gen_', 'fmt': '| float', 'name': 'Daily Generation', 'icon': 'mdi:solar-power-variant', 'must_incr': True}},  # noqa: E501
        Register.TOTAL_GENERATION:  {'name': ['total', 'Total_Generation'],        'level': logging.INFO,  'unit': 'kWh',  'ha': {'dev': 'inverter', 'dev_cla': 'energy', 'stat_cla': 'total',            'id': 'total_gen_', 'fmt': '| float', 'name': 'Total Generation', 'icon': 'mdi:solar-power', 'must_incr': True}},  # noqa: E501

@@ -295,6 +322,7 @@ class Infos:
        Register.DATA_UP_INTERVAL:   {'name': ['controller', 'Data_Up_Interval'],   'level': logging.DEBUG, 'unit': 's',    'ha': {'dev': 'controller', 'dev_cla': None,       'stat_cla': None,          'id': 'data_up_intval_', 'fmt': '| string + " s"', 'name': 'Data Up Interval', 'icon': 'mdi:update', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.HEARTBEAT_INTERVAL: {'name': ['controller', 'Heartbeat_Interval'], 'level': logging.DEBUG, 'unit': 's',    'ha': {'dev': 'controller', 'dev_cla': None,       'stat_cla': None,          'id': 'heartbeat_intval_',    'fmt': '| string + " s"', 'name': 'Heartbeat Interval', 'icon': 'mdi:update', 'ent_cat': 'diagnostic'}},  # noqa: E501
        Register.IP_ADDRESS:         {'name': ['controller', 'IP_Address'],         'level': logging.DEBUG, 'unit': '',     'ha': {'dev': 'controller', 'dev_cla': None,       'stat_cla': None,          'id': 'ip_address_',           'fmt': '| string',        'name': 'IP Address', 'icon': 'mdi:wifi', 'ent_cat': 'diagnostic'}},  # noqa: E501
+        Register.POLLING_INTERVAL:   {'name': ['controller', 'Polling_Interval'],   'level': logging.DEBUG, 'unit': 's',    'ha': {'dev': 'controller', 'dev_cla': None,       'stat_cla': None,          'id': 'polling_intval_', 'fmt': '| string + " s"', 'name': 'Polling Interval', 'icon': 'mdi:update', 'ent_cat': 'diagnostic'}},  # noqa: E501
    }

    @property
@@ -363,6 +391,20 @@ class Infos:

    def ha_conf(self, key, ha_prfx, node_id, snr,  singleton: bool,
                sug_area: str = '') -> tuple[str, str, str, str] | None:
+        '''Method to build json register struct for home-assistant
+        auto configuration and the unique entity string, for all proxy
+        registers
+
+        arguments:
+        key          ==> index of info_defs dict which reference the topic
+        ha_prfx:str  ==> MQTT prefix for the home assistant 'stat_t string
+        node_id:str  ==> node id of the inverter, used to build unique entity
+        snr:str      ==> serial number of the inverter, used to build unique
+                         entity strings
+        singleton    ==> bool to allow/disaalow proxy topics which are common
+                         for all invters
+        sug_area     ==> area name for home assistant
+        '''
        if key not in self.info_defs:
            return None
        row = self.info_defs[key]
@@ -466,6 +508,40 @@ class Infos:
            return json.dumps(attr), component, node_id, attr['uniq_id']
        return None

+    def ha_remove(self, key, node_id, snr) -> tuple[str, str, str, str] | None:
+        '''Method to build json unregister struct for home-assistant
+        to remove topics per auto configuration. Only for inverer topics.
+
+        arguments:
+        key          ==> index of info_defs dict which reference the topic
+        node_id:str  ==> node id of the inverter, used to build unique entity
+        snr:str      ==> serial number of the inverter, used to build unique
+                         entity strings
+
+        hint:
+        the returned tuple must have the same format as self.ha_conf()
+        '''
+        if key not in self.info_defs:
+            return None
+        row = self.info_defs[key]
+
+        if 'singleton' in row:
+            if row['singleton']:
+                return None
+
+        # check if we have details for home assistant
+        if 'ha' in row:
+            ha = row['ha']
+            if 'comp' in ha:
+                component = ha['comp']
+            else:
+                component = 'sensor'
+            attr = {}
+            uniq_id = ha['id']+snr
+
+            return json.dumps(attr), component, node_id, uniq_id
+        return None
+
    def _key_obj(self, id: Register) -> list:
        d = self.info_defs.get(id, {'name': None, 'level': logging.DEBUG,
                                    'unit': ''})
--- a/app/src/messages.py
+++ b/app/src/messages.py
@@ -5,16 +5,16 @@ from enum import Enum


 if __name__ == "app.src.messages":
-    from app.src.infos import Infos
+    from app.src.infos import Infos, Register
    from app.src.modbus import Modbus
 else:  # pragma: no cover
-    from infos import Infos
+    from infos import Infos, Register
    from modbus import Modbus

 logger = logging.getLogger('msg')


-def hex_dump_memory(level, info, data, num):
+def hex_dump_memory(level, info, data, data_len):
    n = 0
    lines = []
    lines.append(info)
@@ -22,20 +22,20 @@ def hex_dump_memory(level, info, data, num):
    if not tracer.isEnabledFor(level):
        return

-    for i in range(0, num, 16):
+    for i in range(0, data_len, 16):
        line = '  '
        line += '%04x | ' % (i)
        n += 16

        for j in range(n-16, n):
-            if j >= len(data):
+            if j >= data_len:
                break
            line += '%02x ' % abs(data[j])

        line += ' ' * (3 * 16 + 9 - len(line)) + ' | '

        for j in range(n-16, n):
-            if j >= len(data):
+            if j >= data_len:
                break
            c = data[j] if not (data[j] < 0x20 or data[j] > 0x7e) else '.'
            line += '%c' % c
@@ -91,6 +91,7 @@ class Message(metaclass=IterRegistry):
        self._forward_buffer = bytearray(0)
        self.new_data = {}
        self.state = State.init
+        self.shutdown_started = False

    '''
    Empty methods, that have to be implemented in any child class which
@@ -104,6 +105,22 @@ class Message(metaclass=IterRegistry):
        '''callback for updating the header of the forward buffer'''
        return  # pragma: no cover

+    def _set_mqtt_timestamp(self, key, ts: float | None):
+        if type(ts) is not None and \
+           key not in self.new_data or \
+           not self.new_data[key]:
+            if key == 'grid':
+                info_id = Register.TS_GRID
+            elif key == 'input':
+                info_id = Register.TS_INPUT
+            elif key == 'total':
+                info_id = Register.TS_TOTAL
+            else:
+                return
+            # tstr = time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime(ts))
+            # logger.info(f'update: key: {key} ts:{tstr}'
+            self.db.set_db_def_value(info_id, round(ts))
+
    '''
    Our puplic methods
    '''
--- a/app/src/modbus.py
+++ b/app/src/modbus.py
@@ -41,8 +41,10 @@ class Modbus():
    __crc_tab = []
    map = {
        0x2007: {'reg': Register.MAX_DESIGNED_POWER,   'fmt': '!H', 'ratio':  1},  # noqa: E501
-        # 0x????: {'reg': Register.INVERTER_STATUS,      'fmt': '!H'},                 # noqa: E501
-        0x3008: {'reg': Register.VERSION,              'fmt': '!H', 'eval': "f'V{(result>>12)}.{(result>>8)&0xf}.{(result>>4)&0xf}{result&0xf}'"},  # noqa: E501
+        0x202c: {'reg': Register.OUTPUT_COEFFICIENT,   'fmt': '!H', 'ratio':  100/1024},  # noqa: E501
+
+        0x3000: {'reg': Register.INVERTER_STATUS,      'fmt': '!H'},                 # noqa: E501
+        0x3008: {'reg': Register.VERSION,              'fmt': '!H', 'eval': "f'V{(result>>12)}.{(result>>8)&0xf}.{(result>>4)&0xf}{result&0xf:1X}'"},  # noqa: E501
        0x3009: {'reg': Register.GRID_VOLTAGE,         'fmt': '!H', 'ratio':  0.1},  # noqa: E501
        0x300a: {'reg': Register.GRID_CURRENT,         'fmt': '!H', 'ratio': 0.01},  # noqa: E501
        0x300b: {'reg': Register.GRID_FREQUENCY,       'fmt': '!H', 'ratio': 0.01},  # noqa: E501
@@ -111,7 +113,7 @@ class Modbus():
        self.__stop_timer()
        self.rsp_handler = None
        self.snd_handler = None
-        while not self.que.empty:
+        while not self.que.empty():
            self.que.get_nowait()

    def __del__(self):
--- a/app/src/modbus_tcp.py
+++ b/app/src/modbus_tcp.py
@@ -0,0 +1,76 @@
+import logging
+import traceback
+import asyncio
+from config import Config
+
+# import gc
+from gen3plus.inverter_g3p import InverterG3P
+
+logger = logging.getLogger('conn')
+
+
+class ModbusConn():
+    def __init__(self, host, port):
+        self.host = host
+        self.port = port
+        self.addr = (host, port)
+        self.stream = None
+
+    async def __aenter__(self) -> 'InverterG3P':
+        '''Establish a client connection to the TSUN cloud'''
+        connection = asyncio.open_connection(self.host, self.port)
+        reader, writer = await connection
+        self.stream = InverterG3P(reader, writer, self.addr,
+                                  client_mode=True)
+        logging.info(f'[{self.stream.node_id}:{self.stream.conn_no}] '
+                     f'Connected to {self.addr}')
+        self.stream.inc_counter('Inverter_Cnt')
+        await self.stream.publish_outstanding_mqtt()
+        return self.stream
+
+    async def __aexit__(self, exc_type, exc, tb):
+        self.stream.dec_counter('Inverter_Cnt')
+        await self.stream.publish_outstanding_mqtt()
+
+
+class ModbusTcp():
+
+    def __init__(self, loop) -> None:
+        inverters = Config.get('inverters')
+        # logging.info(f'Inverters: {inverters}')
+
+        for inv in inverters.values():
+            if (type(inv) is dict
+               and 'monitor_sn' in inv
+               and 'client_mode' in inv):
+                client = inv['client_mode']
+                # logging.info(f"SerialNo:{inv['monitor_sn']} host:{client['host']} port:{client['port']}")  # noqa: E501
+                loop.create_task(self.modbus_loop(client['host'],
+                                                  client['port'],
+                                                  inv['monitor_sn']))
+
+    async def modbus_loop(self, host, port, snr: int) -> None:
+        '''Loop for receiving messages from the TSUN cloud (client-side)'''
+        while True:
+            try:
+                async with ModbusConn(host, port) as stream:
+                    await stream.send_start_cmd(snr, host)
+                    await stream.loop()
+                    logger.info(f'[{stream.node_id}:{stream.conn_no}] '
+                                f'Connection closed - Shutdown: '
+                                f'{stream.shutdown_started}')
+                    if stream.shutdown_started:
+                        return
+
+            except (ConnectionRefusedError, TimeoutError) as error:
+                logging.debug(f'Inv-conn:{error}')
+
+            except OSError as error:
+                logging.info(f'os-error: {error}')
+
+            except Exception:
+                logging.error(
+                    f"ModbusTcpCreate: Exception for {(host,port)}:\n"
+                    f"{traceback.format_exc()}")
+
+            await asyncio.sleep(10)
--- a/app/src/mqtt.py
+++ b/app/src/mqtt.py
@@ -38,7 +38,8 @@ class Mqtt(metaclass=Singleton):
        self.task.cancel()
        try:
            await self.task
-        except Exception as e:
+
+        except (asyncio.CancelledError, Exception) as e:
            logging.debug(f"Mqtt.close: exception: {e} ...")

    async def publish(self, topic: str, payload: str | bytes | bytearray
@@ -60,6 +61,7 @@ class Mqtt(metaclass=Singleton):
        interval = 5  # Seconds
        ha_status_topic = f"{ha['auto_conf_prefix']}/status"
        mb_rated_topic = "tsun/+/rated_load"  # fixme
+        mb_out_coeff_topic = "tsun/+/out_coeff"  # fixme
        mb_reads_topic = "tsun/+/modbus_read_regs"  # fixme
        mb_inputs_topic = "tsun/+/modbus_read_inputs"  # fixme
        mb_at_cmd_topic = "tsun/+/at_cmd"  # fixme
@@ -75,6 +77,7 @@ class Mqtt(metaclass=Singleton):
                    # async with self.__client.messages() as messages:
                    await self.__client.subscribe(ha_status_topic)
                    await self.__client.subscribe(mb_rated_topic)
+                    await self.__client.subscribe(mb_out_coeff_topic)
                    await self.__client.subscribe(mb_reads_topic)
                    await self.__client.subscribe(mb_inputs_topic)
                    await self.__client.subscribe(mb_at_cmd_topic)
@@ -93,6 +96,19 @@ class Mqtt(metaclass=Singleton):
                                                  Modbus.WRITE_SINGLE_REG,
                                                  1, 0x2008)

+                        if message.topic.matches(mb_out_coeff_topic):
+                            payload = message.payload.decode("UTF-8")
+                            val = round(float(payload) * 1024/100)
+
+                            if val < 0 or val > 1024:
+                                logger_mqtt.error('out_coeff: value must be in'
+                                                  'the range 0..100,'
+                                                  f' got: {payload}')
+                            else:
+                                await self.modbus_cmd(message,
+                                                      Modbus.WRITE_SINGLE_REG,
+                                                      0, 0x202c, val)
+
                        if message.topic.matches(mb_reads_topic):
                            await self.modbus_cmd(message,
                                                  Modbus.READ_REGS, 2)
@@ -154,7 +170,7 @@ class Mqtt(metaclass=Singleton):
                logger_mqtt.debug(f'Found: {node_id}')
                fnc = getattr(m, "send_modbus_cmd", None)
                res = payload.split(',')
-                if params != len(res):
+                if params > 0 and params != len(res):
                    logger_mqtt.error(f'Parameter expected: {params}, '
                                      f'got: {len(res)}')
                    return
--- a/app/src/server.py
+++ b/app/src/server.py
@@ -11,6 +11,7 @@ from gen3.inverter_g3 import InverterG3
 from gen3plus.inverter_g3p import InverterG3P
 from scheduler import Schedule
 from config import Config
+from modbus_tcp import ModbusTcp

 routes = web.RouteTableDef()
 proxy_is_up = False
@@ -94,6 +95,7 @@ async def handle_shutdown(web_task):
    # first, disc all open TCP connections gracefully
    #
    for stream in Message:
+        stream.shutdown_started = True
        try:
            await asyncio.wait_for(stream.disc(), 2)
        except Exception:
@@ -115,6 +117,13 @@ async def handle_shutdown(web_task):
    web_task.cancel()
    await web_task

+    #
+    # now cancel all remaining (pending) tasks
+    #
+    pending = asyncio.all_tasks()
+    for task in pending:
+        task.cancel()
+
    #
    # at last, start a coro for stopping the loop
    #
@@ -164,6 +173,7 @@ if __name__ == "__main__":
        logging.info(f'ConfigErr: {ConfigErr}')
    Inverter.class_init()
    Schedule.start()
+    mb_tcp = ModbusTcp(loop)

    #
    # Create tasks for our listening servers. These must be tasks! If we call
--- a/app/tests/test_config.py
+++ b/app/tests/test_config.py
@@ -31,7 +31,7 @@ def test_default_config():
        assert True
    except:
        assert False
-    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'monitor_sn': 0, 'suggested_area': ''}, 'Y170000000000001': {'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': ''}}}
+    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'modbus_polling': True, 'monitor_sn': 0, 'suggested_area': ''}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': ''}}}

 def test_full_config():
    cnf = {'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 
@@ -41,14 +41,14 @@ def test_full_config():
           'mqtt': {'host': 'mqtt', 'port': 1883, 'user': '', 'passwd': ''}, 
           'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 
           'inverters': {'allow_all': True, 
-                         'R170000000000001': {'node_id': '', 'suggested_area': '', 'pv1': {'type': 'type1', 'manufacturer': 'man1'}, 'pv2': {'type': 'type2', 'manufacturer': 'man2'}, 'pv3': {'type': 'type3', 'manufacturer': 'man3'}}, 
-                         'Y170000000000001': {'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': ''}}}
+                         'R170000000000001': {'modbus_polling': True, 'node_id': '', 'suggested_area': '', 'pv1': {'type': 'type1', 'manufacturer': 'man1'}, 'pv2': {'type': 'type2', 'manufacturer': 'man2'}, 'pv3': {'type': 'type3', 'manufacturer': 'man3'}}, 
+                         'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': ''}}}
    try:
        validated = Config.conf_schema.validate(cnf)
        assert True
    except:
        assert False
-    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'monitor_sn': 0, 'pv1': {'manufacturer': 'man1','type': 'type1'},'pv2': {'manufacturer': 'man2','type': 'type2'},'pv3': {'manufacturer': 'man3','type': 'type3'}, 'suggested_area': ''}, 'Y170000000000001': {'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': ''}}}
+    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'modbus_polling': True, 'monitor_sn': 0, 'pv1': {'manufacturer': 'man1','type': 'type1'},'pv2': {'manufacturer': 'man2','type': 'type2'},'pv3': {'manufacturer': 'man3','type': 'type3'}, 'suggested_area': ''}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'node_id': '', 'suggested_area': ''}}}

 def test_mininum_config():
    cnf = {'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 
@@ -66,7 +66,7 @@ def test_mininum_config():
        assert True
    except:
        assert False
-    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'monitor_sn': 0, 'suggested_area': ''}}}
+    assert validated == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'node_id': '', 'modbus_polling': True, 'monitor_sn': 0, 'suggested_area': ''}}}

 def test_read_empty():
    cnf = {}
@@ -74,7 +74,7 @@ def test_read_empty():
    err = TstConfig.read('app/config/')
    assert err == None
    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
+    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': True, 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
    
    defcnf = TstConfig.def_config.get('solarman') 
    assert defcnf == {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}
@@ -96,7 +96,7 @@ def test_read_cnf1():
    err = TstConfig.read('app/config/')
    assert err == None
    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': False, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
+    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': False, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': True, 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
    cnf = TstConfig.get('solarman')
    assert cnf == {'enabled': False, 'host': 'iot.talent-monitoring.com', 'port': 10000}    
    defcnf = TstConfig.def_config.get('solarman') 
@@ -109,7 +109,7 @@ def test_read_cnf2():
    err = TstConfig.read('app/config/')
    assert err == None
    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
+    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 10000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': True, 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
    assert True == TstConfig.is_default('solarman')

 def test_read_cnf3():
@@ -126,7 +126,7 @@ def test_read_cnf4():
    err = TstConfig.read('app/config/')
    assert err == None
    cnf = TstConfig.get()
-    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 5000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
+    assert cnf == {'gen3plus': {'at_acl': {'mqtt': {'allow': ['AT+'], 'block': []}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE'], 'block': []}}}, 'tsun': {'enabled': True, 'host': 'logger.talent-monitoring.com', 'port': 5005}, 'solarman': {'enabled': True, 'host': 'iot.talent-monitoring.com', 'port': 5000}, 'mqtt': {'host': 'mqtt', 'port': 1883, 'user': None, 'passwd': None}, 'ha': {'auto_conf_prefix': 'homeassistant', 'discovery_prefix': 'homeassistant', 'entity_prefix': 'tsun', 'proxy_node_id': 'proxy', 'proxy_unique_id': 'P170000000000001'}, 'inverters': {'allow_all': True, 'R170000000000001': {'suggested_area': '', 'modbus_polling': True, 'monitor_sn': 0, 'node_id': ''}, 'Y170000000000001': {'modbus_polling': True, 'monitor_sn': 2000000000, 'suggested_area': '', 'node_id': ''}}}
    assert False == TstConfig.is_default('solarman')

 def test_read_cnf5():
--- a/app/tests/test_infos.py
+++ b/app/tests/test_infos.py
@@ -123,6 +123,30 @@ def test_table_definition():
    val = i.dev_value(Register.INTERNAL_ERROR)  # check internal error counter
    assert val == 3

+def test_table_remove():
+    i = Infos()
+    i.static_init()                # initialize counter
+
+    val = i.dev_value(Register.INTERNAL_ERROR)  # check internal error counter
+    assert val == 0
+
+    # for d_json, comp, node_id, id in i.ha_confs(ha_prfx="tsun/", node_id="garagendach/", snr='123', sug_area = 'roof'):
+    #    pass
+    test = 0
+    for reg in Register:
+        res = i.ha_remove(reg, node_id="garagendach/", snr='123')  # noqa: E501
+        if reg == Register.INVERTER_STATUS:
+            test += 1
+            assert res == ('{}', 'sensor', 'garagendach/', 'inv_status_123')
+        elif reg == Register.COLLECT_INTERVAL:
+            test += 1
+            assert res == ('{}', 'sensor', 'garagendach/', 'data_collect_intval_123')
+
+    assert test == 2
+    val = i.dev_value(Register.INTERNAL_ERROR)  # check internal error counter
+    assert val == 0
+
+
 def test_clr_at_midnight():
    i = Infos()
    i.static_init()                # initialize counter
--- a/app/tests/test_infos_g3p.py
+++ b/app/tests/test_infos_g3p.py
@@ -56,15 +56,15 @@ def InverterData():  # 0x4210 ftype: 0x01


 def test_default_db():
-    i = InfosG3P()
+    i = InfosG3P(client_mode=False)
    
    assert json.dumps(i.db) == json.dumps({
-        "inverter": {"Manufacturer": "TSUN", "Equipment_Model": "TSOL-MSxx00"}, 
+        "inverter": {"Manufacturer": "TSUN", "Equipment_Model": "TSOL-MSxx00", "No_Inputs": 4}, 
        "collector": {"Chip_Type": "IGEN TECH"},
        })

 def test_parse_4110(DeviceData: bytes):
-    i = InfosG3P()
+    i = InfosG3P(client_mode=False)
    i.db.clear()
    for key, update in i.parse (DeviceData, 0x41, 2):
        pass
@@ -75,7 +75,7 @@ def test_parse_4110(DeviceData: bytes):
        })

 def test_parse_4210(InverterData: bytes):
-    i = InfosG3P()
+    i = InfosG3P(client_mode=False)
    i.db.clear()
    
    for key, update in i.parse (InverterData, 0x42, 1):
@@ -83,7 +83,7 @@ def test_parse_4210(InverterData: bytes):

    assert json.dumps(i.db) == json.dumps({
         "controller": {"Power_On_Time": 2051}, 
-         "inverter": {"Serial_Number": "Y17E00000000000E", "Version": "V4.0.10", "Rated_Power": 600, "Max_Designed_Power": 2000, "No_Inputs": 4}, 
+         "inverter": {"Serial_Number": "Y17E00000000000E", "Version": "V4.0.10", "Rated_Power": 600, "Max_Designed_Power": 2000}, 
         "env": {"Inverter_Status": 1, "Inverter_Temp": 14}, 
         "grid": {"Voltage": 224.8, "Current": 0.73, "Frequency": 50.05, "Output_Power": 165.8}, 
         "input": {"pv1": {"Voltage": 35.3, "Current": 1.68, "Power": 59.6, "Daily_Generation": 0.04, "Total_Generation": 30.76}, 
@@ -94,7 +94,7 @@ def test_parse_4210(InverterData: bytes):
        })
    
 def test_build_ha_conf1():
-    i = InfosG3P()
+    i = InfosG3P(client_mode=False)
    i.static_init()                # initialize counter

    tests = 0
@@ -116,8 +116,19 @@ def test_build_ha_conf1():
            tests +=1

        elif id == 'power_pv2_123':
-            assert False    # if we haven't received and parsed a control data msg, we don't know the number of inputs. In this case we only register the first one!!
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/input", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "power_pv2_123", "val_tpl": "{{ (value_json['pv2']['Power'] | float)}}", "unit_of_meas": "W", "dev": {"name": "Module PV2", "sa": "Module PV2", "via_device": "inverter_123", "ids": ["input_pv2_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1

+        elif id == 'power_pv3_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/input", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "power_pv3_123", "val_tpl": "{{ (value_json['pv3']['Power'] | float)}}", "unit_of_meas": "W", "dev": {"name": "Module PV3", "sa": "Module PV3", "via_device": "inverter_123", "ids": ["input_pv3_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+        elif id == 'power_pv4_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/input", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "power_pv4_123", "val_tpl": "{{ (value_json['pv4']['Power'] | float)}}", "unit_of_meas": "W", "dev": {"name": "Module PV4", "sa": "Module PV4", "via_device": "inverter_123", "ids": ["input_pv4_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1

        elif id == 'signal_123':
            assert comp == 'sensor'
@@ -126,7 +137,7 @@ def test_build_ha_conf1():
        elif id == 'inv_count_456':
            assert False

-    assert tests==4
+    assert tests==7


    for d_json, comp, node_id, id in i.ha_proxy_confs(ha_prfx="tsun/", node_id = 'proxy/', snr = '456'):
@@ -138,8 +149,11 @@ def test_build_ha_conf1():
        elif id == 'power_pv1_123':
            assert False
        elif id == 'power_pv2_123':
-            assert False    # if we haven't received and parsed a control data msg, we don't know the number of inputs. In this case we only register the first one!!
-
+            assert False
+        elif id == 'power_pv3_123':
+            assert False
+        elif id == 'power_pv4_123':
+            assert False
        elif id == 'signal_123':
            assert False
        elif id == 'inv_count_456':
@@ -147,7 +161,77 @@ def test_build_ha_conf1():
            assert  d_json == json.dumps({"name": "Active Inverter Connections", "stat_t": "tsun/proxy/proxy", "dev_cla": None, "stat_cla": None, "uniq_id": "inv_count_456", "val_tpl": "{{value_json['Inverter_Cnt'] | int}}", "ic": "mdi:counter", "dev": {"name": "Proxy", "sa": "Proxy", "mdl": "proxy", "mf": "Stefan Allius", "sw": "unknown", "ids": ["proxy"]}, "o": {"name": "proxy", "sw": "unknown"}})
            tests +=1

-    assert tests==5
+    assert tests==8
+
+def test_build_ha_conf2():
+    i = InfosG3P(client_mode=True)
+    i.static_init()                # initialize counter
+
+    tests = 0
+    for d_json, comp, node_id, id in i.ha_confs(ha_prfx="tsun/", node_id="garagendach/", snr='123'):
+
+        if id == 'out_power_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/grid", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "out_power_123", "val_tpl": "{{value_json['Output_Power'] | float}}", "unit_of_meas": "W", "dev": {"name": "Micro Inverter", "sa": "Micro Inverter", "via_device": "controller_123", "mdl": "TSOL-MSxx00", "mf": "TSUN", "ids": ["inverter_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+        elif id == 'daily_gen_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Daily Generation", "stat_t": "tsun/garagendach/total", "dev_cla": "energy", "stat_cla": "total_increasing", "uniq_id": "daily_gen_123", "val_tpl": "{{value_json['Daily_Generation'] | float}}", "unit_of_meas": "kWh", "ic": "mdi:solar-power-variant", "dev": {"name": "Micro Inverter", "sa": "Micro Inverter", "via_device": "controller_123", "mdl": "TSOL-MSxx00", "mf": "TSUN", "ids": ["inverter_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+        elif id == 'power_pv1_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/input", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "power_pv1_123", "val_tpl": "{{ (value_json['pv1']['Power'] | float)}}", "unit_of_meas": "W", "dev": {"name": "Module PV1", "sa": "Module PV1", "via_device": "inverter_123", "ids": ["input_pv1_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+        elif id == 'power_pv2_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/input", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "power_pv2_123", "val_tpl": "{{ (value_json['pv2']['Power'] | float)}}", "unit_of_meas": "W", "dev": {"name": "Module PV2", "sa": "Module PV2", "via_device": "inverter_123", "ids": ["input_pv2_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+        elif id == 'power_pv3_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/input", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "power_pv3_123", "val_tpl": "{{ (value_json['pv3']['Power'] | float)}}", "unit_of_meas": "W", "dev": {"name": "Module PV3", "sa": "Module PV3", "via_device": "inverter_123", "ids": ["input_pv3_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+        elif id == 'power_pv4_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Power", "stat_t": "tsun/garagendach/input", "dev_cla": "power", "stat_cla": "measurement", "uniq_id": "power_pv4_123", "val_tpl": "{{ (value_json['pv4']['Power'] | float)}}", "unit_of_meas": "W", "dev": {"name": "Module PV4", "sa": "Module PV4", "via_device": "inverter_123", "ids": ["input_pv4_123"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+        elif id == 'signal_123':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({})
+            tests +=1
+        elif id == 'inv_count_456':
+            assert False
+
+    assert tests==7
+
+
+    for d_json, comp, node_id, id in i.ha_proxy_confs(ha_prfx="tsun/", node_id = 'proxy/', snr = '456'):
+
+        if id == 'out_power_123':
+            assert False
+        elif id == 'daily_gen_123':
+            assert False
+        elif id == 'power_pv1_123':
+            assert False
+        elif id == 'power_pv2_123':
+            assert False
+        elif id == 'power_pv3_123':
+            assert False
+        elif id == 'power_pv4_123':
+            assert False
+        elif id == 'signal_123':
+            assert False
+        elif id == 'inv_count_456':
+            assert comp == 'sensor'
+            assert  d_json == json.dumps({"name": "Active Inverter Connections", "stat_t": "tsun/proxy/proxy", "dev_cla": None, "stat_cla": None, "uniq_id": "inv_count_456", "val_tpl": "{{value_json['Inverter_Cnt'] | int}}", "ic": "mdi:counter", "dev": {"name": "Proxy", "sa": "Proxy", "mdl": "proxy", "mf": "Stefan Allius", "sw": "unknown", "ids": ["proxy"]}, "o": {"name": "proxy", "sw": "unknown"}})
+            tests +=1
+
+    assert tests==8

 def test_exception_and_eval(InverterData: bytes):

@@ -159,7 +243,7 @@ def test_exception_and_eval(InverterData: bytes):
    Backup = RegisterMap.map[0x420100de]
    RegisterMap.map[0x420100de] = 'invalid_entry'

-    i = InfosG3P()
+    i = InfosG3P(client_mode=False)
    # i.db.clear()
    
    for key, update in i.parse (InverterData, 0x42, 1):
--- a/app/tests/test_modbus.py
+++ b/app/tests/test_modbus.py
@@ -32,7 +32,12 @@ def test_modbus_crc():
    assert mb._Modbus__check_crc(b'\x01\x06\x20\x08\x00\x00\x03\xc8')

    assert 0x5c75 == mb._Modbus__calc_crc(b'\x01\x03\x08\x01\x2c\x00\x2c\x02\x2c\x2c\x46')
-    
+    msg = b'\x01\x03\x28\x51'
+    msg += b'\x0e\x08\xd3\x00\x29\x13\x87\x00\x3e\x00\x00\x01\x2c\x03\xb4\x00'
+    msg += b'\x08\x00\x00\x00\x00\x01\x59\x01\x21\x03\xe6\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\xe6\xef'
+    assert 0 == mb._Modbus__calc_crc(msg)
+
 def test_build_modbus_pdu():
    '''Check building and sending a MODBUS RTU'''
    mb = ModbusTestHelper()
@@ -173,7 +178,7 @@ def test_parse_resp():
    assert mb.req_pend

    call = 0
-    exp_result = ['V0.0.212', 4.4, 0.7, 0.7, 30]
+    exp_result = ['V0.0.2C', 4.4, 0.7, 0.7, 30]
    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
        if key == 'grid':
            assert update == True
@@ -222,7 +227,7 @@ def test_queue2():
    assert mb.send_calls == 1
    assert mb.pdu == b'\x01\x030\x07\x00\x06{\t'
    call = 0
-    exp_result = ['V0.0.212', 4.4, 0.7, 0.7, 30]
+    exp_result = ['V0.0.2C', 4.4, 0.7, 0.7, 30]
    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
        if key == 'grid':
            assert update == True
@@ -272,7 +277,7 @@ def test_queue3():
    assert mb.recv_responses == 0

    call = 0
-    exp_result = ['V0.0.212', 4.4, 0.7, 0.7, 30]
+    exp_result = ['V0.0.2C', 4.4, 0.7, 0.7, 30]
    for key, update, val in mb.recv_resp(mb.db, b'\x01\x03\x0c\x01\x2c\x00\x2c\x00\x2c\x00\x46\x00\x46\x00\x46\x32\xc8', 'test'):
        if key == 'grid':
            assert update == True
@@ -378,3 +383,16 @@ def test_recv_unknown_data():
    assert not mb.req_pend

    del mb.map[0x9000]
+
+def test_close():
+    '''Check queue handling for build_msg() calls'''
+    mb = ModbusTestHelper()
+    mb.build_msg(1,3,0x3007,6)
+    mb.build_msg(1,6,0x2008,4)
+    assert mb.que.qsize() == 1
+    mb.build_msg(1,3,0x3007,6)
+    assert mb.que.qsize() == 2
+    assert mb.que.empty() == False 
+    mb.close()
+    assert mb.que.qsize() == 0
+    assert mb.que.empty() == True 
--- a/app/tests/test_solarman.py
+++ b/app/tests/test_solarman.py
@@ -1,8 +1,8 @@
 import pytest
 import struct
 import time
+import asyncio
 import logging
-from datetime import datetime
 from app.src.gen3plus.solarman_v5 import SolarmanV5
 from app.src.config import Config
 from app.src.infos import Infos, Register
@@ -38,9 +38,11 @@ class Mqtt():

 class MemoryStream(SolarmanV5):
    def __init__(self, msg, chunks = (0,), server_side: bool = True):
-        super().__init__(server_side)
+        super().__init__(server_side, client_mode=False)
        if server_side:
-            self.mb.timeout = 1   # overwrite for faster testing
+            self.mb.timeout = 0.4   # overwrite for faster testing
+        self.mb_start_timeout = 0.5
+        self.mb_timeout = 0.5
        self.writer = Writer()
        self.mqtt = Mqtt()
        self.__msg = msg
@@ -58,6 +60,7 @@ class MemoryStream(SolarmanV5):
        self.at_acl = {'mqtt': {'allow': ['AT+'], 'block': ['AT+WEBU']}, 'tsun': {'allow': ['AT+Z', 'AT+UPURL', 'AT+SUPDATE', 'AT+TIME'], 'block': ['AT+WEBU']}}
        self.key = ''
        self.data = ''
+        self.msg_recvd = []

    def _timestamp(self):
        return timestamp
@@ -68,6 +71,7 @@ class MemoryStream(SolarmanV5):
    def append_msg(self, msg):
        self.__msg += msg
        self.__msg_len += len(msg)    
+        self.__chunk_idx = 0

    def publish_mqtt(self, key, data):
        self.key = key
@@ -102,6 +106,13 @@ class MemoryStream(SolarmanV5):
        return c

    def _SolarmanV5__flush_recv_msg(self) -> None:
+        self.msg_recvd.append(
+            {
+                'control': self.control,
+                'seq': str(self.seq),
+                'data_len': self.data_len
+            }
+        )
        super()._SolarmanV5__flush_recv_msg()
        self.msg_count += 1
        return
@@ -626,11 +637,11 @@ def ConfigTsunAllowAll():

@pytest.fixture
 def ConfigNoTsunInv1():
-    Config.config = {'solarman':{'enabled': False},'inverters':{'Y170000000000001':{'monitor_sn': 2070233889,'node_id':'inv1','suggested_area':'roof'}}}
+    Config.config = {'solarman':{'enabled': False},'inverters':{'Y170000000000001':{'monitor_sn': 2070233889, 'node_id':'inv1', 'modbus_polling': True, 'suggested_area':'roof'}}}

@pytest.fixture
 def ConfigTsunInv1():
-    Config.config = {'solarman':{'enabled': True},'inverters':{'Y170000000000001':{'monitor_sn': 2070233889,'node_id':'inv1','suggested_area':'roof'}}}
+    Config.config = {'solarman':{'enabled': True},'inverters':{'Y170000000000001':{'monitor_sn': 2070233889, 'node_id':'inv1', 'modbus_polling': True, 'suggested_area':'roof'}}}

 def test_read_message(DeviceIndMsg):
    m = MemoryStream(DeviceIndMsg, (0,))
@@ -695,29 +706,20 @@ def test_invalid_stop_byte2(InvalidStopByte, DeviceIndMsg):
    # only the first message must be discarded
    m = MemoryStream(InvalidStopByte, (0,))
    m.append_msg(DeviceIndMsg)
-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since start byte is wrong
-    assert m.msg_count == 1     # msg flush was called
-    assert m.header_len==11
-    assert m.snr == 2070233889
-    assert m.unique_id == 0
-    assert m.control == 0x4110
-    assert str(m.seq) == '01:00'
-    assert m.data_len == 0xd4
-    assert m._recv_buffer==DeviceIndMsg
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
-    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 1

    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.msg_count == 2
    assert m.header_len==11
    assert m.snr == 2070233889
+    assert m.msg_recvd[0]['control']==0x4110
+    assert m.msg_recvd[0]['seq']=='01:00'
+    assert m.msg_recvd[0]['data_len']==0xd4
+    assert m.msg_recvd[1]['control']==0x4110
+    assert m.msg_recvd[1]['seq']=='01:00'
+    assert m.msg_recvd[1]['data_len']==0xd4
+
    assert m.unique_id == None
-    assert m.control == 0x4110
-    assert str(m.seq) == '01:00'
-    assert m.data_len == 0xd4
    assert m._recv_buffer==b''
    assert m._send_buffer==b''
    assert m._forward_buffer==b''
@@ -751,19 +753,6 @@ def test_invalid_checksum(InvalidChecksum, DeviceIndMsg):
    # only the first message must be discarded
    m = MemoryStream(InvalidChecksum, (0,))
    m.append_msg(DeviceIndMsg)
-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since start byte is wrong
-    assert m.msg_count == 1     # msg flush was called
-    assert m.header_len==11
-    assert m.snr == 2070233889
-    assert m.unique_id == 0
-    assert m.control == 0x4110
-    assert str(m.seq) == '01:00'
-    assert m.data_len == 0xd4
-    assert m._recv_buffer==DeviceIndMsg
-    assert m._send_buffer==b''
-    assert m._forward_buffer==b''
-    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 1

    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
@@ -771,9 +760,12 @@ def test_invalid_checksum(InvalidChecksum, DeviceIndMsg):
    assert m.header_len==11
    assert m.snr == 2070233889
    assert m.unique_id == None
-    assert m.control == 0x4110
-    assert str(m.seq) == '01:00'
-    assert m.data_len == 0xd4
+    assert m.msg_recvd[0]['control']==0x4110
+    assert m.msg_recvd[0]['seq']=='01:00'
+    assert m.msg_recvd[0]['data_len']==0xd4
+    assert m.msg_recvd[1]['control']==0x4110
+    assert m.msg_recvd[1]['seq']=='01:00'
+    assert m.msg_recvd[1]['data_len']==0xd4
    assert m._recv_buffer==b''
    assert m._send_buffer==b''
    assert m._forward_buffer==b''
@@ -786,28 +778,17 @@ def test_read_message_twice(ConfigNoTsunInv1, DeviceIndMsg, DeviceRspMsg):
    m.append_msg(DeviceIndMsg)
    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.msg_count == 1
-    assert m.header_len==11
-    assert m.snr == 2070233889
-    assert m.unique_id == '2070233889'
-    assert m.control == 0x4110
-    assert str(m.seq) == '01:01'
-    assert m.data_len == 0xd4
-    assert m._send_buffer==DeviceRspMsg
-    assert m._forward_buffer==b''
-    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
-    
-    m._send_buffer = bytearray(0) # clear send buffer for next test    
-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.msg_count == 2
    assert m.header_len==11
    assert m.snr == 2070233889
    assert m.unique_id == '2070233889'
-    assert m.control == 0x4110
-    assert str(m.seq) == '01:01'
-    assert m.data_len == 0xd4
-    assert m._send_buffer==DeviceRspMsg
+    assert m.msg_recvd[0]['control']==0x4110
+    assert m.msg_recvd[0]['seq']=='01:01'
+    assert m.msg_recvd[0]['data_len']==0xd4
+    assert m.msg_recvd[1]['control']==0x4110
+    assert m.msg_recvd[1]['seq']=='01:01'
+    assert m.msg_recvd[1]['data_len']==0xd4
+    assert m._send_buffer==DeviceRspMsg+DeviceRspMsg
    assert m._forward_buffer==b''
    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
    m.close()
@@ -862,27 +843,8 @@ def test_read_two_messages(ConfigTsunAllowAll, DeviceIndMsg, DeviceRspMsg, Inver
    ConfigTsunAllowAll
    m = MemoryStream(DeviceIndMsg, (0,))
    m.append_msg(InverterIndMsg)
-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.msg_count == 1
-    assert m.header_len==11
-    assert m.snr == 2070233889
-    assert m.unique_id == '2070233889'
-    assert m.control == 0x4110
-    assert str(m.seq) == '01:01'
-    assert m.data_len == 0xd4
-    assert m.msg_count == 1
-    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
-    assert m._forward_buffer==DeviceIndMsg
-    assert m._send_buffer==DeviceRspMsg
- 
-    m._send_buffer = bytearray(0) # clear send buffer for next test  
+
    m._init_new_client_conn()
-    assert m._send_buffer==b''
-    assert m._recv_buffer==InverterIndMsg
-    
-    m._send_buffer = bytearray(0) # clear send buffer for next test
-    m._forward_buffer = bytearray(0) # clear forward buffer for next test
    m.read()         # read complete msg, and dispatch msg
    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
@@ -890,12 +852,14 @@ def test_read_two_messages(ConfigTsunAllowAll, DeviceIndMsg, DeviceRspMsg, Inver
    assert m.header_len==11
    assert m.snr == 2070233889
    assert m.unique_id == '2070233889'
-    assert m.control == 0x4210
-    assert str(m.seq) == '02:02'
-    assert m.data_len == 0x199
-    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
-    assert m._forward_buffer==InverterIndMsg
-    assert m._send_buffer==InverterRspMsg
+    assert m.msg_recvd[0]['control']==0x4110
+    assert m.msg_recvd[0]['seq']=='01:01'
+    assert m.msg_recvd[0]['data_len']==0xd4
+    assert m.msg_recvd[1]['control']==0x4210
+    assert m.msg_recvd[1]['seq']=='02:02'
+    assert m.msg_recvd[1]['data_len']==0x199
+    assert m._forward_buffer==DeviceIndMsg+InverterIndMsg
+    assert m._send_buffer==DeviceRspMsg+InverterRspMsg

    m._send_buffer = bytearray(0) # clear send buffer for next test    
    m._init_new_client_conn()
@@ -907,41 +871,21 @@ def test_read_two_messages2(ConfigTsunAllowAll, InverterIndMsg, InverterIndMsg_8
    m = MemoryStream(InverterIndMsg, (0,))
    m.append_msg(InverterIndMsg_81)
    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.msg_count == 1
-    assert m.header_len==11
-    assert m.snr == 2070233889
-    assert m.unique_id == '2070233889'
-    assert m.control == 0x4210
-    assert m.time_ofs == 0x33e447a0
-    assert str(m.seq) == '02:02'
-    assert m.data_len == 0x199
-    assert m.msg_count == 1
-    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
-    assert m._forward_buffer==InverterIndMsg
-    assert m._send_buffer==InverterRspMsg
- 
-    m._send_buffer = bytearray(0) # clear send buffer for next test  
-    m._init_new_client_conn()
-    assert m._send_buffer==b''
-    assert m._recv_buffer==InverterIndMsg_81
-    
-    m._send_buffer = bytearray(0) # clear send buffer for next test
-    m._forward_buffer = bytearray(0) # clear forward buffer for next test
-    m.read()         # read complete msg, and dispatch msg
    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.msg_count == 2
    assert m.header_len==11
    assert m.snr == 2070233889
    assert m.unique_id == '2070233889'
-    assert m.control == 0x4210
+    assert m.msg_recvd[0]['control']==0x4210
+    assert m.msg_recvd[0]['seq']=='02:02'
+    assert m.msg_recvd[0]['data_len']==0x199
+    assert m.msg_recvd[1]['control']==0x4210
+    assert m.msg_recvd[1]['seq']=='03:03'
+    assert m.msg_recvd[1]['data_len']==0x199
    assert m.time_ofs == 0x33e447a0
-    assert str(m.seq) == '03:03'
-    assert m.data_len == 0x199
-    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
-    assert m._forward_buffer==InverterIndMsg_81
-    assert m._send_buffer==InverterRspMsg_81
+    assert m._forward_buffer==InverterIndMsg+InverterIndMsg_81
+    assert m._send_buffer==InverterRspMsg+InverterRspMsg_81

    m._send_buffer = bytearray(0) # clear send buffer for next test    
    m._init_new_client_conn()
@@ -1020,6 +964,25 @@ def test_heartbeat_ind(ConfigTsunInv1, HeartbeatIndMsg, HeartbeatRspMsg):
    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
    m.close()

+def test_heartbeat_ind2(ConfigTsunInv1, HeartbeatIndMsg, HeartbeatRspMsg):
+    ConfigTsunInv1
+    m = MemoryStream(HeartbeatIndMsg, (0,))
+    m.no_forwarding = True
+    m.read()         # read complete msg, and dispatch msg
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.header_len==11
+    assert m.snr == 2070233889
+    # assert m.unique_id == '2070233889'
+    assert m.control == 0x4710
+    assert str(m.seq) == '84:11'  # value after sending response
+    assert m.data_len == 0x01
+    assert m._recv_buffer==b''
+    assert m._send_buffer==HeartbeatRspMsg
+    assert m._forward_buffer==b''
+    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
+    m.close()
+
 def test_heartbeat_rsp(ConfigTsunInv1, HeartbeatRspMsg):
    ConfigTsunInv1
    m = MemoryStream(HeartbeatRspMsg, (0,), False)
@@ -1192,9 +1155,9 @@ def test_build_logger_modell(ConfigTsunAllowAll, DeviceIndMsg):
    m.close()

 def test_msg_iterator():
-    m1 = SolarmanV5(server_side=True)
-    m2 = SolarmanV5(server_side=True)
-    m3 = SolarmanV5(server_side=True)
+    m1 = SolarmanV5(server_side=True, client_mode=False)
+    m2 = SolarmanV5(server_side=True, client_mode=False)
+    m3 = SolarmanV5(server_side=True, client_mode=False)
    m3.close()
    del m3
    test1 = 0
@@ -1212,7 +1175,7 @@ def test_msg_iterator():
    assert test2 == 1

 def test_proxy_counter():
-    m = SolarmanV5(server_side=True)
+    m = SolarmanV5(server_side=True, client_mode=False)
    assert m.new_data == {}
    m.db.stat['proxy']['Unknown_Msg'] = 0
    Infos.new_stat_data['proxy'] =  False
@@ -1233,26 +1196,28 @@ def test_proxy_counter():
 async def test_msg_build_modbus_req(ConfigTsunInv1, DeviceIndMsg, DeviceRspMsg, InverterIndMsg, InverterRspMsg, MsgModbusCmd):
    ConfigTsunInv1
    m = MemoryStream(DeviceIndMsg, (0,), True)
-    m.append_msg(InverterIndMsg)
    m.read()
    assert m.control == 0x4110
    assert str(m.seq) == '01:01'
-    assert m._recv_buffer==InverterIndMsg   # unhandled next message
    assert m._send_buffer==DeviceRspMsg
    assert m._forward_buffer==DeviceIndMsg

    m._send_buffer = bytearray(0) # clear send buffer for next test    
    m._forward_buffer = bytearray(0) # clear send buffer for next test    
    await m.send_modbus_cmd(Modbus.WRITE_SINGLE_REG, 0x2008, 0, logging.DEBUG)
-    assert m._recv_buffer==InverterIndMsg   # unhandled next message
    assert 0 == m.send_msg_ofs
    assert m._forward_buffer == b''
    assert m.writer.sent_pdu == b'' # modbus command must be ignore, cause connection is still not up
    assert m._send_buffer == b''    # modbus command must be ignore, cause connection is still not up

+    m.append_msg(InverterIndMsg)
    m.read()
    assert m.control == 0x4210
    assert str(m.seq) == '02:02'
+    assert m.msg_recvd[0]['control']==0x4110
+    assert m.msg_recvd[0]['seq']=='01:01'
+    assert m.msg_recvd[1]['control']==0x4210
+    assert m.msg_recvd[1]['seq']=='02:02'
    assert m._recv_buffer==b''
    assert m._send_buffer==InverterRspMsg
    assert m._forward_buffer==InverterIndMsg
@@ -1277,36 +1242,31 @@ async def test_msg_build_modbus_req(ConfigTsunInv1, DeviceIndMsg, DeviceRspMsg,
 async def test_AT_cmd(ConfigTsunAllowAll, DeviceIndMsg, DeviceRspMsg, InverterIndMsg, InverterRspMsg, AtCommandIndMsg, AtCommandRspMsg):
    ConfigTsunAllowAll
    m = MemoryStream(DeviceIndMsg, (0,), True)
-    m.append_msg(InverterIndMsg)
-    m.append_msg(AtCommandRspMsg)
    m.read()   # read device ind
    assert m.control == 0x4110
    assert str(m.seq) == '01:01'
-    assert m._recv_buffer==InverterIndMsg + AtCommandRspMsg  # unhandled next message
    assert m._send_buffer==DeviceRspMsg
    assert m._forward_buffer==DeviceIndMsg

    m._send_buffer = bytearray(0) # clear send buffer for next test    
    m._forward_buffer = bytearray(0) # clear send buffer for next test    
    await m.send_at_cmd('AT+TIME=214028,1,60,120')
-    assert m._recv_buffer==InverterIndMsg + AtCommandRspMsg     # unhandled next message
    assert m._send_buffer==b''
    assert m._forward_buffer==b''
    assert str(m.seq) == '01:01'
    assert m.mqtt.key == ''
    assert m.mqtt.data == ""

+    m.append_msg(InverterIndMsg)
    m.read() # read inverter ind
    assert m.control == 0x4210
    assert str(m.seq) == '02:02'
-    assert m._recv_buffer==AtCommandRspMsg   # unhandled next message
    assert m._send_buffer==InverterRspMsg
    assert m._forward_buffer==InverterIndMsg
    
    m._send_buffer = bytearray(0) # clear send buffer for next test    
    m._forward_buffer = bytearray(0) # clear send buffer for next test    
    await m.send_at_cmd('AT+TIME=214028,1,60,120')
-    assert m._recv_buffer==AtCommandRspMsg   # unhandled next message
    assert m._send_buffer==AtCommandIndMsg
    assert m._forward_buffer==b''
    assert str(m.seq) == '02:03'
@@ -1314,6 +1274,7 @@ async def test_AT_cmd(ConfigTsunAllowAll, DeviceIndMsg, DeviceRspMsg, InverterIn
    assert m.mqtt.data == ""

    m._send_buffer = bytearray(0) # clear send buffer for next test    
+    m.append_msg(AtCommandRspMsg)
    m.read() # read at resp
    assert m.control == 0x1510
    assert str(m.seq) == '03:03'
@@ -1338,24 +1299,22 @@ async def test_AT_cmd(ConfigTsunAllowAll, DeviceIndMsg, DeviceRspMsg, InverterIn
 async def test_AT_cmd_blocked(ConfigTsunAllowAll, DeviceIndMsg, DeviceRspMsg, InverterIndMsg, InverterRspMsg, AtCommandIndMsg):
    ConfigTsunAllowAll
    m = MemoryStream(DeviceIndMsg, (0,), True)
-    m.append_msg(InverterIndMsg)
    m.read()
    assert m.control == 0x4110
    assert str(m.seq) == '01:01'
-    assert m._recv_buffer==InverterIndMsg   # unhandled next message
    assert m._send_buffer==DeviceRspMsg
    assert m._forward_buffer==DeviceIndMsg

    m._send_buffer = bytearray(0) # clear send buffer for next test    
    m._forward_buffer = bytearray(0) # clear send buffer for next test    
    await m.send_at_cmd('AT+WEBU')
-    assert m._recv_buffer==InverterIndMsg   # unhandled next message
    assert m._send_buffer==b''
    assert m._forward_buffer==b''
    assert str(m.seq) == '01:01'
    assert m.mqtt.key == ''
    assert m.mqtt.data == ""

+    m.append_msg(InverterIndMsg)
    m.read()
    assert m.control == 0x4210
    assert str(m.seq) == '02:02'
@@ -1562,7 +1521,6 @@ def test_msg_modbus_rsp2(ConfigTsunInv1, MsgModbusRsp):
    '''Modbus response with a valid Modbus request must be forwarded'''
    ConfigTsunInv1
    m = MemoryStream(MsgModbusRsp)
-    m.append_msg(MsgModbusRsp)

    m.mb.rsp_handler = m._SolarmanV5__forward_msg
    m.mb.last_addr = 1
@@ -1586,6 +1544,8 @@ def test_msg_modbus_rsp2(ConfigTsunInv1, MsgModbusRsp):
    m.new_data['inverter'] = False

    m.mb.req_pend = True
+    m._forward_buffer = bytearray()
+    m.append_msg(MsgModbusRsp)
    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.mb.err == 0
@@ -1602,7 +1562,6 @@ def test_msg_modbus_rsp3(ConfigTsunInv1, MsgModbusRsp):
    '''Modbus response with a valid Modbus request must be forwarded'''
    ConfigTsunInv1
    m = MemoryStream(MsgModbusRsp)
-    m.append_msg(MsgModbusRsp)

    m.mb.rsp_handler = m._SolarmanV5__forward_msg
    m.mb.last_addr = 1
@@ -1625,11 +1584,13 @@ def test_msg_modbus_rsp3(ConfigTsunInv1, MsgModbusRsp):
    assert m.new_data['inverter'] == True
    m.new_data['inverter'] = False

+    m._forward_buffer = bytearray()
+    m.append_msg(MsgModbusRsp)
    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.mb.err == 5
    assert m.msg_count == 2
-    assert m._forward_buffer==MsgModbusRsp
+    assert m._forward_buffer==b''
    assert m._send_buffer==b''
    # assert m.db.db == {'inverter': {'Version': 'V5.1.09', 'Rated_Power': 300}, 'grid': {'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
    assert m.db.get_db_value(Register.VERSION) == 'V4.0.10'
@@ -1693,6 +1654,81 @@ def test_msg_modbus_fragment(ConfigTsunInv1, MsgModbusRsp):
    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
    assert m.db.stat['proxy']['Modbus_Command'] == 0
    m.close()
+
+@pytest.mark.asyncio
+async def test_modbus_polling(ConfigTsunInv1, HeartbeatIndMsg, HeartbeatRspMsg):
+    ConfigTsunInv1
+    assert asyncio.get_running_loop()
+    m = MemoryStream(HeartbeatIndMsg, (0,))
+    assert asyncio.get_running_loop() == m.mb_timer.loop
+    m.db.stat['proxy']['Unknown_Ctrl'] = 0
+    assert m.mb_timer.tim == None
+    m.read()         # read complete msg, and dispatch msg
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.header_len==11
+    assert m.snr == 2070233889
+    # assert m.unique_id == '2070233889'
+    assert m.control == 0x4710
+    assert str(m.seq) == '84:11'  # value after sending response
+    assert m.data_len == 0x01
+    assert m._recv_buffer==b''
+    assert m._send_buffer==HeartbeatRspMsg
+    assert m._forward_buffer==HeartbeatIndMsg
+    assert m.db.stat['proxy']['Invalid_Msg_Format'] == 0
+
+    m._send_buffer = bytearray(0) # clear send buffer for next test
+    assert m.state == State.up
+    assert m.mb_timeout == 0.5
+    assert next(m.mb_timer.exp_count) == 0
+    
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x12\x84!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x03\x30\x00\x000J\xde\x86\x15')
+    assert m._send_buffer==b''
+    
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x13\x84!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x03\x30\x00\x000J\xde\x87\x15')
+    assert m._send_buffer==b''
+    m.state = State.closed
+    m.writer.sent_pdu = bytearray()
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==bytearray(b'')
+    assert m._send_buffer==b''
+    assert next(m.mb_timer.exp_count) == 4
+    m.close()
+
+@pytest.mark.asyncio
+async def test_start_client_mode(ConfigTsunInv1):
+    ConfigTsunInv1
+    assert asyncio.get_running_loop()
+    m = MemoryStream(b'')
+    assert m.state == State.init
+    assert m.no_forwarding == False
+    assert m.mb_timer.tim == None
+    assert asyncio.get_running_loop() == m.mb_timer.loop
+    await m.send_start_cmd(get_sn_int(), '192.168.1.1', m.mb_start_timeout)
+    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x01\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf1\x15')
+    assert m.db.get_db_value(Register.IP_ADDRESS) == '192.168.1.1'
+    assert m.db.get_db_value(Register.POLLING_INTERVAL) == 0.5
+    assert m.db.get_db_value(Register.HEARTBEAT_INTERVAL) == 120
+
+    assert m.state == State.up
+    assert m.no_forwarding == True
+
+    assert m._send_buffer==b''
+    assert m.mb_timeout == 0.5
+    assert next(m.mb_timer.exp_count) == 0
+    
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x02\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf2\x15')
+    assert m._send_buffer==b''
+    
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==bytearray(b'\xa5\x17\x00\x10E\x03\x00!Ce{\x02\xb0\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x030\x00\x000J\xde\xf3\x15')
+    assert m._send_buffer==b''
+    assert next(m.mb_timer.exp_count) == 3
+    m.close()
+
 '''
 def test_zombie_conn(ConfigTsunInv1, MsgInverterInd):
    ConfigTsunInv1
--- a/app/tests/test_talent.py
+++ b/app/tests/test_talent.py
@@ -1,5 +1,5 @@
 # test_with_pytest.py
-import pytest, logging
+import pytest, logging, asyncio
 from app.src.gen3.talent import Talent, Control
 from app.src.config import Config
 from app.src.infos import Infos, Register
@@ -26,7 +26,9 @@ class MemoryStream(Talent):
    def __init__(self, msg, chunks = (0,), server_side: bool = True):
        super().__init__(server_side)
        if server_side:
-            self.mb.timeout = 1   # overwrite for faster testing
+            self.mb.timeout = 0.4   # overwrite for faster testing
+        self.mb_start_timeout = 0.5
+        self.mb_timeout = 0.5
        self.writer = Writer()
        self.__msg = msg
        self.__msg_len = len(msg)
@@ -37,6 +39,7 @@ class MemoryStream(Talent):
        self.addr = 'Test: SrvSide'
        self.send_msg_ofs = 0
        self.test_exception_async_write = False
+        self.msg_recvd = []

    def append_msg(self, msg):
        self.__msg += msg
@@ -61,8 +64,10 @@ class MemoryStream(Talent):
        return copied_bytes
    
    def _timestamp(self):
-        # return 1700260990000
        return 1691246944000
+
+    def _utc(self):
+        return 1691239744.0
    
    def createClientStream(self, msg, chunks = (0,)):
        c = MemoryStream(msg, chunks, False)
@@ -71,7 +76,17 @@ class MemoryStream(Talent):
        return c

    def _Talent__flush_recv_msg(self) -> None:
+        self.msg_recvd.append(
+            {
+                'ctrl': int(self.ctrl),
+                'msg_id': self.msg_id,
+                'header_len': self.header_len,
+                'data_len': self.data_len
+            }
+        )
+
        super()._Talent__flush_recv_msg()
+
        self.msg_count += 1
        return
    
@@ -171,6 +186,43 @@ def MsgInverterIndTsOffs(): # Data indication from the controller + offset 256
    msg +=  b'\x54\x10T170000000000001\x00\x00\x00\x32\x54\x0a\x54\x53\x4f\x4c\x2d\x4d\x53\x36\x30\x30\x00\x00\x00\x3c\x54\x05\x41\x2c\x42\x2c\x43'
    return msg

+@pytest.fixture
+def MsgInverterInd2(): # Data indication from the controller
+    msg  =  b'\x00\x00\x05\x02\x10R170000000000001\x91\x04\x01\x90\x00\x01\x10R170000000000001'
+    msg +=  b'\x01\x00\x00\x01\x89\xc6\x63\x61\x08'
+    msg +=  b'\x00\x00\x00\xa3\x00\x00\x00\x64\x53\x00\x01\x00\x00\x00\xc8\x53\x00\x02\x00\x00\x01\x2c\x53\x00\x00\x00\x00\x01\x90\x49\x00\x00\x00\x00\x00\x00\x01\x91\x53\x00\x00'
+    msg +=  b'\x00\x00\x01\x92\x53\x00\x00\x00\x00\x01\x93\x53\x00\x00\x00\x00\x01\x94\x53\x00\x00\x00\x00\x01\x95\x53\x00\x00\x00\x00\x01\x96\x53\x00\x00\x00\x00\x01\x97\x53\x00'
+    msg +=  b'\x00\x00\x00\x01\x98\x53\x00\x00\x00\x00\x01\x99\x53\x00\x00\x00\x00\x01\x9a\x53\x00\x00\x00\x00\x01\x9b\x53\x00\x00\x00\x00\x01\x9c\x53\x00\x00\x00\x00\x01\x9d\x53'
+    msg +=  b'\x00\x00\x00\x00\x01\x9e\x53\x00\x00\x00\x00\x01\x9f\x53\x00\x00\x00\x00\x01\xa0\x53\x00\x00\x00\x00\x01\xf4\x49\x00\x00\x00\x00\x00\x00\x01\xf5\x53\x00\x00\x00\x00'
+    msg +=  b'\x01\xf6\x53\x00\x00\x00\x00\x01\xf7\x53\x00\x00\x00\x00\x01\xf8\x53\x00\x00\x00\x00\x01\xf9\x53\x00\x00\x00\x00\x01\xfa\x53\x00\x00\x00\x00\x01\xfb\x53\x00\x00\x00'
+    msg +=  b'\x00\x01\xfc\x53\x00\x00\x00\x00\x01\xfd\x53\x00\x00\x00\x00\x01\xfe\x53\x00\x00\x00\x00\x01\xff\x53\x00\x00\x00\x00\x02\x00\x53\x00\x00\x00\x00\x02\x01\x53\x00\x00'
+    msg +=  b'\x00\x00\x02\x02\x53\x00\x00\x00\x00\x02\x03\x53\x00\x00\x00\x00\x02\x04\x53\x00\x00\x00\x00\x02\x58\x49\x00\x00\x00\x00\x00\x00\x02\x59\x53\x00\x00\x00\x00\x02\x5a'
+    msg +=  b'\x53\x00\x00\x00\x00\x02\x5b\x53\x00\x00\x00\x00\x02\x5c\x53\x00\x00\x00\x00\x02\x5d\x53\x00\x00\x00\x00\x02\x5e\x53\x00\x00\x00\x00\x02\x5f\x53\x00\x00\x00\x00\x02'
+    msg +=  b'\x60\x53\x00\x00\x00\x00\x02\x61\x53\x00\x00\x00\x00\x02\x62\x53\x00\x00\x00\x00\x02\x63\x53\x00\x00\x00\x00\x02\x64\x53\x00\x00\x00\x00\x02\x65\x53\x00\x00\x00\x00'
+    msg +=  b'\x02\x66\x53\x00\x00\x00\x00\x02\x67\x53\x00\x00\x00\x00\x02\x68\x53\x00\x00\x00\x00\x02\xbc\x49\x00\x00\x00\x00\x00\x00\x02\xbd\x53\x00\x00\x00\x00\x02\xbe\x53\x00'
+    msg +=  b'\x00\x00\x00\x02\xbf\x53\x00\x00\x00\x00\x02\xc0\x53\x00\x00\x00\x00\x02\xc1\x53\x00\x00\x00\x00\x02\xc2\x53\x00\x00\x00\x00\x02\xc3\x53\x00\x00\x00\x00\x02\xc4\x53'
+    msg +=  b'\x00\x00\x00\x00\x02\xc5\x53\x00\x00\x00\x00\x02\xc6\x53\x00\x00\x00\x00\x02\xc7\x53\x00\x00\x00\x00\x02\xc8\x53\x00\x00\x00\x00\x02\xc9\x53\x00\x00\x00\x00\x02\xca'
+    msg +=  b'\x53\x00\x00\x00\x00\x02\xcb\x53\x00\x00\x00\x00\x02\xcc\x53\x00\x00\x00\x00\x03\x20\x53\x00\x00\x00\x00\x03\x84\x53\x50\x11\x00\x00\x03\xe8\x46\x43\x61\x66\x66\x00'
+    msg +=  b'\x00\x04\x4c\x46\x3e\xeb\x85\x1f\x00\x00\x04\xb0\x46\x42\x48\x14\x7b\x00\x00\x05\x14\x53\x00\x17\x00\x00\x05\x78\x53\x00\x00\x00\x00\x05\xdc\x53\x02\x58\x00\x00\x06'
+    msg +=  b'\x40\x46\x42\xd3\x66\x66\x00\x00\x06\xa4\x46\x42\x06\x66\x66\x00\x00\x07\x08\x46\x3f\xf4\x7a\xe1\x00\x00\x07\x6c\x46\x42\x81\x00\x00\x00\x00\x07\xd0\x46\x42\x06\x00'
+    msg +=  b'\x00\x00\x00\x08\x34\x46\x3f\xae\x14\x7b\x00\x00\x08\x98\x46\x42\x36\xcc\xcd\x00\x00\x08\xfc\x46\x00\x00\x00\x00\x00\x00\x09\x60\x46\x00\x00\x00\x00\x00\x00\x09\xc4'
+    msg +=  b'\x46\x00\x00\x00\x00\x00\x00\x0a\x28\x46\x00\x00\x00\x00\x00\x00\x0a\x8c\x46\x00\x00\x00\x00\x00\x00\x0a\xf0\x46\x00\x00\x00\x00\x00\x00\x0b\x54\x46\x3f\xd9\x99\x9a'
+    msg +=  b'\x00\x00\x0b\xb8\x46\x41\x8a\xe1\x48\x00\x00\x0c\x1c\x46\x3f\x8a\x3d\x71\x00\x00\x0c\x80\x46\x41\x1b\xd7\x0a\x00\x00\x0c\xe4\x46\x3f\x1e\xb8\x52\x00\x00\x0d\x48\x46'
+    msg +=  b'\x40\xf3\xd7\x0a\x00\x00\x0d\xac\x46\x00\x00\x00\x00\x00\x00\x0e\x10\x46\x00\x00\x00\x00\x00\x00\x0e\x74\x46\x00\x00\x00\x00\x00\x00\x0e\xd8\x46\x00\x00\x00\x00\x00'
+    msg +=  b'\x00\x0f\x3c\x53\x00\x00\x00\x00\x0f\xa0\x53\x00\x00\x00\x00\x10\x04\x53\x55\xaa\x00\x00\x10\x68\x53\x00\x00\x00\x00\x10\xcc\x53\x00\x00\x00\x00\x11\x30\x53\x00\x00'
+    msg +=  b'\x00\x00\x11\x94\x53\x00\x00\x00\x00\x11\xf8\x53\xff\xff\x00\x00\x12\x5c\x53\xff\xff\x00\x00\x12\xc0\x53\x00\x02\x00\x00\x13\x24\x53\xff\xff\x00\x00\x13\x88\x53\xff'
+    msg +=  b'\xff\x00\x00\x13\xec\x53\xff\xff\x00\x00\x14\x50\x53\xff\xff\x00\x00\x14\xb4\x53\xff\xff\x00\x00\x15\x18\x53\xff\xff\x00\x00\x15\x7c\x53\x00\x00\x00\x00\x27\x10\x53'
+    msg +=  b'\x00\x02\x00\x00\x27\x74\x53\x00\x3c\x00\x00\x27\xd8\x53\x00\x68\x00\x00\x28\x3c\x53\x05\x00\x00\x00\x28\xa0\x46\x43\x79\x00\x00\x00\x00\x29\x04\x46\x43\x48\x00\x00'
+    msg +=  b'\x00\x00\x29\x68\x46\x42\x48\x33\x33\x00\x00\x29\xcc\x46\x42\x3e\x3d\x71\x00\x00\x2a\x30\x53\x00\x01\x00\x00\x2a\x94\x46\x43\x37\x00\x00\x00\x00\x2a\xf8\x46\x42\xce'
+    msg +=  b'\x00\x00\x00\x00\x2b\x5c\x53\x00\x96\x00\x00\x2b\xc0\x53\x00\x10\x00\x00\x2c\x24\x46\x43\x90\x00\x00\x00\x00\x2c\x88\x46\x43\x95\x00\x00\x00\x00\x2c\xec\x53\x00\x06'
+    msg +=  b'\x00\x00\x2d\x50\x53\x00\x06\x00\x00\x2d\xb4\x46\x43\x7d\x00\x00\x00\x00\x2e\x18\x46\x42\x3d\xeb\x85\x00\x00\x2e\x7c\x46\x42\x3d\xeb\x85\x00\x00\x2e\xe0\x53\x00\x03'
+    msg +=  b'\x00\x00\x2f\x44\x53\x00\x03\x00\x00\x2f\xa8\x46\x42\x4d\xeb\x85\x00\x00\x30\x0c\x46\x42\x4d\xeb\x85\x00\x00\x30\x70\x53\x00\x03\x00\x00\x30\xd4\x53\x00\x03\x00\x00'
+    msg +=  b'\x31\x38\x46\x42\x08\x00\x00\x00\x00\x31\x9c\x53\x00\x05\x00\x00\x32\x00\x53\x04\x00\x00\x00\x32\x64\x53\x00\x01\x00\x00\x32\xc8\x53\x13\x9c\x00\x00\x33\x2c\x53\x0f'
+    msg +=  b'\xa0\x00\x00\x33\x90\x53\x00\x4f\x00\x00\x33\xf4\x53\x00\x66\x00\x00\x34\x58\x53\x03\xe8\x00\x00\x34\xbc\x53\x04\x00\x00\x00\x35\x20\x53\x00\x00\x00\x00\x35\x84\x53'
+    msg +=  b'\x00\x00\x00\x00\x35\xe8\x53\x00\x00\x00\x00\x36\x4c\x53\x00\x00\x00\x01\x38\x80\x53\x00\x02\x00\x01\x38\x81\x53\x00\x01\x00\x01\x38\x82\x53\x00\x01\x00\x01\x38\x83'
+    msg +=  b'\x53\x00\x00'  
+    return msg
+
@pytest.fixture
 def MsgInverterIndNew(): # Data indication from DSP V5.0.17
    msg =  b'\x00\x00\x04\xa0\x10R170000000000001\x91\x04\x01\x90\x00\x01\x10R170000000000001'
@@ -249,6 +301,44 @@ def MsgInverterIndNew(): # Data indication from DSP V5.0.17
    msg += b'\x00\x00\x00\x00'
    return msg

+@pytest.fixture
+def MsgInverterInd0W(): # Data indication with 0.5W grid output
+    msg =  b'\x00\x00\x05\x02\x10R170000000000001\x91\x04\x01\x90\x00\x01\x10R170000000000001'
+    msg += b'\x01\x00\x00\x01'
+    msg += b'\x90\x31\x4d\x68\x78'
+    msg +=  b'\x00\x00\x00\xa3\x00\x00\x00\x64\x53\x00\x01\x00\x00\x00\xc8\x53\x00\x02\x00\x00\x01\x2c\x53\x00\x00\x00\x00\x01\x90\x49\x00\x00\x00\x00\x00\x00\x01\x91\x53\x00\x00'
+    msg +=  b'\x00\x00\x01\x92\x53\x00\x00\x00\x00\x01\x93\x53\x00\x00\x00\x00\x01\x94\x53\x00\x00\x00\x00\x01\x95\x53\x00\x00\x00\x00\x01\x96\x53\x00\x00\x00\x00\x01\x97\x53\x00'
+    msg +=  b'\x00\x00\x00\x01\x98\x53\x00\x00\x00\x00\x01\x99\x53\x00\x00\x00\x00\x01\x9a\x53\x00\x00\x00\x00\x01\x9b\x53\x00\x00\x00\x00\x01\x9c\x53\x00\x00\x00\x00\x01\x9d\x53'
+    msg +=  b'\x00\x00\x00\x00\x01\x9e\x53\x00\x00\x00\x00\x01\x9f\x53\x00\x00\x00\x00\x01\xa0\x53\x00\x00\x00\x00\x01\xf4\x49\x00\x00\x00\x00\x00\x00\x01\xf5\x53\x00\x00\x00\x00'
+    msg +=  b'\x01\xf6\x53\x00\x00\x00\x00\x01\xf7\x53\x00\x00\x00\x00\x01\xf8\x53\x00\x00\x00\x00\x01\xf9\x53\x00\x00\x00\x00\x01\xfa\x53\x00\x00\x00\x00\x01\xfb\x53\x00\x00\x00'
+    msg +=  b'\x00\x01\xfc\x53\x00\x00\x00\x00\x01\xfd\x53\x00\x00\x00\x00\x01\xfe\x53\x00\x00\x00\x00\x01\xff\x53\x00\x00\x00\x00\x02\x00\x53\x00\x00\x00\x00\x02\x01\x53\x00\x00'
+    msg +=  b'\x00\x00\x02\x02\x53\x00\x00\x00\x00\x02\x03\x53\x00\x00\x00\x00\x02\x04\x53\x00\x00\x00\x00\x02\x58\x49\x00\x00\x00\x00\x00\x00\x02\x59\x53\x00\x00\x00\x00\x02\x5a'
+    msg +=  b'\x53\x00\x00\x00\x00\x02\x5b\x53\x00\x00\x00\x00\x02\x5c\x53\x00\x00\x00\x00\x02\x5d\x53\x00\x00\x00\x00\x02\x5e\x53\x00\x00\x00\x00\x02\x5f\x53\x00\x00\x00\x00\x02'
+    msg +=  b'\x60\x53\x00\x00\x00\x00\x02\x61\x53\x00\x00\x00\x00\x02\x62\x53\x00\x00\x00\x00\x02\x63\x53\x00\x00\x00\x00\x02\x64\x53\x00\x00\x00\x00\x02\x65\x53\x00\x00\x00\x00'
+    msg +=  b'\x02\x66\x53\x00\x00\x00\x00\x02\x67\x53\x00\x00\x00\x00\x02\x68\x53\x00\x00\x00\x00\x02\xbc\x49\x00\x00\x00\x00\x00\x00\x02\xbd\x53\x00\x00\x00\x00\x02\xbe\x53\x00'
+    msg +=  b'\x00\x00\x00\x02\xbf\x53\x00\x00\x00\x00\x02\xc0\x53\x00\x00\x00\x00\x02\xc1\x53\x00\x00\x00\x00\x02\xc2\x53\x00\x00\x00\x00\x02\xc3\x53\x00\x00\x00\x00\x02\xc4\x53'
+    msg +=  b'\x00\x00\x00\x00\x02\xc5\x53\x00\x00\x00\x00\x02\xc6\x53\x00\x00\x00\x00\x02\xc7\x53\x00\x00\x00\x00\x02\xc8\x53\x00\x00\x00\x00\x02\xc9\x53\x00\x00\x00\x00\x02\xca'
+    msg +=  b'\x53\x00\x00\x00\x00\x02\xcb\x53\x00\x00\x00\x00\x02\xcc\x53\x00\x00\x00\x00\x03\x20\x53\x00\x00\x00\x00\x03\x84\x53\x50\x11\x00\x00\x03\xe8\x46\x43\x61\x66\x66\x00'
+    msg +=  b'\x00\x04\x4c\x46\x3e\xeb\x85\x1f\x00\x00\x04\xb0\x46\x42\x48\x14\x7b\x00\x00\x05\x14\x53\x00\x17\x00\x00\x05\x78\x53\x00\x00\x00\x00\x05\xdc\x53\x02\x58\x00\x00\x06'
+    msg += b'\x40\x46\x3f\x00\x00\x00\x00\x00\x06\xa4\x46\x42\x06\x66\x66\x00\x00\x07\x08\x46\x3f\xf4\x7a\xe1\x00\x00\x07\x6c\x46\x42\x81\x00\x00\x00\x00\x07\xd0\x46\x42\x06\x00'
+    msg +=  b'\x00\x00\x00\x08\x34\x46\x3f\xae\x14\x7b\x00\x00\x08\x98\x46\x42\x36\xcc\xcd\x00\x00\x08\xfc\x46\x00\x00\x00\x00\x00\x00\x09\x60\x46\x00\x00\x00\x00\x00\x00\x09\xc4'
+    msg +=  b'\x46\x00\x00\x00\x00\x00\x00\x0a\x28\x46\x00\x00\x00\x00\x00\x00\x0a\x8c\x46\x00\x00\x00\x00\x00\x00\x0a\xf0\x46\x00\x00\x00\x00\x00\x00\x0b\x54\x46\x3f\xd9\x99\x9a'
+    msg +=  b'\x00\x00\x0b\xb8\x46\x41\x8a\xe1\x48\x00\x00\x0c\x1c\x46\x3f\x8a\x3d\x71\x00\x00\x0c\x80\x46\x41\x1b\xd7\x0a\x00\x00\x0c\xe4\x46\x3f\x1e\xb8\x52\x00\x00\x0d\x48\x46'
+    msg +=  b'\x40\xf3\xd7\x0a\x00\x00\x0d\xac\x46\x00\x00\x00\x00\x00\x00\x0e\x10\x46\x00\x00\x00\x00\x00\x00\x0e\x74\x46\x00\x00\x00\x00\x00\x00\x0e\xd8\x46\x00\x00\x00\x00\x00'
+    msg +=  b'\x00\x0f\x3c\x53\x00\x00\x00\x00\x0f\xa0\x53\x00\x00\x00\x00\x10\x04\x53\x55\xaa\x00\x00\x10\x68\x53\x00\x00\x00\x00\x10\xcc\x53\x00\x00\x00\x00\x11\x30\x53\x00\x00'
+    msg +=  b'\x00\x00\x11\x94\x53\x00\x00\x00\x00\x11\xf8\x53\xff\xff\x00\x00\x12\x5c\x53\xff\xff\x00\x00\x12\xc0\x53\x00\x02\x00\x00\x13\x24\x53\xff\xff\x00\x00\x13\x88\x53\xff'
+    msg +=  b'\xff\x00\x00\x13\xec\x53\xff\xff\x00\x00\x14\x50\x53\xff\xff\x00\x00\x14\xb4\x53\xff\xff\x00\x00\x15\x18\x53\xff\xff\x00\x00\x15\x7c\x53\x00\x00\x00\x00\x27\x10\x53'
+    msg +=  b'\x00\x02\x00\x00\x27\x74\x53\x00\x3c\x00\x00\x27\xd8\x53\x00\x68\x00\x00\x28\x3c\x53\x05\x00\x00\x00\x28\xa0\x46\x43\x79\x00\x00\x00\x00\x29\x04\x46\x43\x48\x00\x00'
+    msg +=  b'\x00\x00\x29\x68\x46\x42\x48\x33\x33\x00\x00\x29\xcc\x46\x42\x3e\x3d\x71\x00\x00\x2a\x30\x53\x00\x01\x00\x00\x2a\x94\x46\x43\x37\x00\x00\x00\x00\x2a\xf8\x46\x42\xce'
+    msg +=  b'\x00\x00\x00\x00\x2b\x5c\x53\x00\x96\x00\x00\x2b\xc0\x53\x00\x10\x00\x00\x2c\x24\x46\x43\x90\x00\x00\x00\x00\x2c\x88\x46\x43\x95\x00\x00\x00\x00\x2c\xec\x53\x00\x06'
+    msg +=  b'\x00\x00\x2d\x50\x53\x00\x06\x00\x00\x2d\xb4\x46\x43\x7d\x00\x00\x00\x00\x2e\x18\x46\x42\x3d\xeb\x85\x00\x00\x2e\x7c\x46\x42\x3d\xeb\x85\x00\x00\x2e\xe0\x53\x00\x03'
+    msg +=  b'\x00\x00\x2f\x44\x53\x00\x03\x00\x00\x2f\xa8\x46\x42\x4d\xeb\x85\x00\x00\x30\x0c\x46\x42\x4d\xeb\x85\x00\x00\x30\x70\x53\x00\x03\x00\x00\x30\xd4\x53\x00\x03\x00\x00'
+    msg +=  b'\x31\x38\x46\x42\x08\x00\x00\x00\x00\x31\x9c\x53\x00\x05\x00\x00\x32\x00\x53\x04\x00\x00\x00\x32\x64\x53\x00\x01\x00\x00\x32\xc8\x53\x13\x9c\x00\x00\x33\x2c\x53\x0f'
+    msg +=  b'\xa0\x00\x00\x33\x90\x53\x00\x4f\x00\x00\x33\xf4\x53\x00\x66\x00\x00\x34\x58\x53\x03\xe8\x00\x00\x34\xbc\x53\x04\x00\x00\x00\x35\x20\x53\x00\x00\x00\x00\x35\x84\x53'
+    msg +=  b'\x00\x00\x00\x00\x35\xe8\x53\x00\x00\x00\x00\x36\x4c\x53\x00\x00\x00\x01\x38\x80\x53\x00\x02\x00\x01\x38\x81\x53\x00\x01\x00\x01\x38\x82\x53\x00\x01\x00\x01\x38\x83'
+    msg +=  b'\x53\x00\x00'  
+    return msg
+
@pytest.fixture
 def MsgInverterAck(): # Get Time Request message
    return b'\x00\x00\x00\x14\x10R170000000000001\x99\x04\x01'
@@ -267,14 +357,18 @@ def ConfigTsunAllowAll():

@pytest.fixture
 def ConfigNoTsunInv1():
-    Config.config = {'tsun':{'enabled': False},'inverters':{'R170000000000001':{'node_id':'inv1','suggested_area':'roof'}}}
+    Config.config = {'tsun':{'enabled': False},'inverters':{'R170000000000001':{'node_id':'inv1', 'modbus_polling': True, 'suggested_area':'roof'}}}

@pytest.fixture
 def ConfigTsunInv1():
-    Config.config = {'tsun':{'enabled': True},'inverters':{'R170000000000001':{'node_id':'inv1','suggested_area':'roof'}}}
+    Config.config = {'tsun':{'enabled': True},'inverters':{'R170000000000001':{'node_id':'inv1', 'modbus_polling': True, 'suggested_area':'roof'}}}

@pytest.fixture
-def MsgOtaReq(): # Over the air update rewuest from tsun cloud
+def ConfigNoMbPoll():
+    Config.config = {'tsun':{'enabled': True},'inverters':{'R170000000000001':{'node_id':'inv1', 'modbus_polling': False, 'suggested_area':'roof'}}}
+
+@pytest.fixture
+def MsgOtaReq(): # Over the air update request from tsun cloud
    msg  =  b'\x00\x00\x01\x16\x10R170000000000001\x70\x13\x01\x02\x76\x35\x70\x68\x74\x74\x70'
    msg +=  b'\x3a\x2f\x2f\x77\x77\x77\x2e\x74\x61\x6c\x65\x6e\x74\x2d\x6d\x6f'
    msg +=  b'\x6e\x69\x74\x6f\x72\x69\x6e\x67\x2e\x63\x6f\x6d\x3a\x39\x30\x30'
@@ -339,6 +433,99 @@ def MsgModbusResp20():
    msg += b'\x00\x00\x00\x00\x00\x00\x00\xdb\x6b'
    return msg

+@pytest.fixture
+def MsgModbusResp21():
+    msg  = b'\x00\x00\x00\x45\x10R170000000000001'
+    msg += b'\x91\x77\x17\x18\x19\x1a\x2d\x01\x03\x28\x51'
+    msg += b'\x0e\x08\xd3\x00\x29\x13\x87\x00\x3e\x00\x00\x01\x2c\x03\xb4\x00'
+    msg += b'\x08\x00\x00\x00\x00\x01\x59\x01\x21\x03\xe6\x00\x00\x00\x00\x00'
+    msg += b'\x00\x00\x00\x00\x00\x00\x00\xe6\xef'
+    return msg
+
+@pytest.fixture
+def BrokenRecvBuf(): # There are two message in the buffer, but the second has overwritten the first partly
+    msg  = b'\x00\x00\x05\x02\x10R170000000000001\x91\x04\x01\x90\x00\x01\x10R170000000000001'
+    msg += b'\x01\x00\x00\x01\x89\xc6\x63\x61\x08'
+    msg += b'\x00\x00\x00\xa3\x00\x00\x00\x64\x53\x00\x01'
+    msg += b'\x00\x00\x00\xc8\x53\x00\x00\x00\x00\x01\x2c\x53\x00\x02\x00\x00'
+    msg += b'\x01\x90\x49\x00\x00\x00\x00\x00\x00\x01\x91\x53\x00\x00\x00\x00'
+    msg += b'\x01\x92\x53\x00\x00\x00\x00\x01\x93\x53\x00\x00\x00\x00\x01\x94'
+    msg += b'\x53\x00\x00\x00\x00\x00\x05\x02\x10\x52\x31\x37\x45\x37\x33\x30'
+    msg += b'\x37\x30\x32\x31\x44\x30\x30\x36\x41\x91\x04\x01\x90\x00\x01\x10'
+    msg += b'\x54\x31\x37\x45\x37\x33\x30\x37\x30\x32\x31\x44\x30\x30\x36\x41'
+    msg += b'\x01\x00\x00\x01\x91\x1c\xe6\x80\xd0\x00\x00\x00\xa3\x00\x00\x00'
+    msg += b'\x64\x53\x00\x01\x00\x00\x00\xc8\x53\x00\x00\x00\x00\x01\x2c\x53'
+    msg += b'\x00\x02\x00\x00\x01\x90\x49\x00\x00\x00\x00\x00\x00\x01\x91\x53'
+    msg += b'\x00\x00\x00\x00\x01\x92\x53\x00\x00\x00\x00\x01\x93\x53\x00\x00'
+    msg += b'\x00\x00\x01\x94\x53\x00\x00\x00\x00\x01\x95\x53\x00\x00\x00\x00'
+    msg += b'\x01\x96\x53\x00\x00\x00\x00\x01\x97\x53\x00\x00\x00\x00\x01\x98'
+    msg += b'\x53\x00\x00\x00\x00\x01\x99\x53\x00\x00\x00\x00\x01\x9a\x53\x00'
+    msg += b'\x00\x00\x00\x01\x9b\x53\x00\x00\x00\x00\x01\x9c\x53\x00\x00\x00'
+    msg += b'\x00\x01\x9d\x53\x00\x00\x00\x00\x01\x9e\x53\x00\x00\x00\x00\x01'
+    msg += b'\x9f\x53\x00\x00\x00\x00\x01\xa0\x53\x00\x00\x00\x00\x01\xf4\x49'
+    msg += b'\x00\x00\x00\x00\x00\x00\x01\xf5\x53\x00\x00\x00\x00\x01\xf6\x53'
+    msg += b'\x00\x00\x00\x00\x01\xf7\x53\x00\x00\x00\x00\x01\xf8\x53\x00\x00'
+    msg += b'\x00\x00\x01\xf9\x53\x00\x00\x00\x00\x01\xfa\x53\x00\x00\x00\x00'
+    msg += b'\x01\xfb\x53\x00\x00\x00\x00\x01\xfc\x53\x00\x00\x00\x00\x01\xfd'
+    msg += b'\x53\x00\x00\x00\x00\x01\xfe\x53\x00\x00\x00\x00\x01\xff\x53\x00'
+    msg += b'\x00\x00\x00\x02\x00\x53\x00\x00\x00\x00\x02\x01\x53\x00\x00\x00'
+    msg += b'\x00\x02\x02\x53\x00\x00\x00\x00\x02\x03\x53\x00\x00\x00\x00\x02'
+    msg += b'\x04\x53\x00\x00\x00\x00\x02\x58\x49\x00\x00\x00\x00\x00\x00\x02'
+    msg += b'\x59\x53\x00\x00\x00\x00\x02\x5a\x53\x00\x00\x00\x00\x02\x5b\x53'
+    msg += b'\x00\x00\x00\x00\x02\x5c\x53\x00\x00\x00\x00\x02\x5d\x53\x00\x00'
+    msg += b'\x00\x00\x02\x5e\x53\x00\x00\x00\x00\x02\x5f\x53\x00\x00\x00\x00'
+    msg += b'\x02\x60\x53\x00\x00\x00\x00\x02\x61\x53\x00\x00\x00\x00\x02\x62'
+    msg += b'\x53\x00\x00\x00\x00\x02\x63\x53\x00\x00\x00\x00\x02\x64\x53\x00'
+    msg += b'\x00\x00\x00\x02\x65\x53\x00\x00\x00\x00\x02\x66\x53\x00\x00\x00'
+    msg += b'\x00\x02\x67\x53\x00\x00\x00\x00\x02\x68\x53\x00\x00\x00\x00\x02'
+    msg += b'\xbc\x49\x00\x00\x00\x00\x00\x00\x02\xbd\x53\x00\x00\x00\x00\x02'
+    msg += b'\xbe\x53\x00\x00\x00\x00\x02\xbf\x53\x00\x00\x00\x00\x02\xc0\x53'
+    msg += b'\x00\x00\x00\x00\x02\xc1\x53\x00\x00\x00\x00\x02\xc2\x53\x00\x00'
+    msg += b'\x00\x00\x02\xc3\x53\x00\x00\x00\x00\x02\xc4\x53\x00\x00\x00\x00'
+    msg += b'\x02\xc5\x53\x00\x00\x00\x00\x02\xc6\x53\x00\x00\x00\x00\x02\xc7'
+    msg += b'\x53\x00\x00\x00\x00\x02\xc8\x53\x00\x00\x00\x00\x02\xc9\x53\x00'
+    msg += b'\x00\x00\x00\x02\xca\x53\x00\x00\x00\x00\x02\xcb\x53\x00\x00\x00'
+    msg += b'\x00\x02\xcc\x53\x00\x00\x00\x00\x03\x20\x53\x00\x00\x00\x00\x03'
+    msg += b'\x84\x53\x51\x09\x00\x00\x03\xe8\x46\x43\x62\xb3\x33\x00\x00\x04'
+    msg += b'\x4c\x46\x3e\xc2\x8f\x5c\x00\x00\x04\xb0\x46\x42\x48\x00\x00\x00'
+    msg += b'\x00\x05\x14\x53\x00\x18\x00\x00\x05\x78\x53\x00\x00\x00\x00\x05'
+    msg += b'\xdc\x53\x02\x58\x00\x00\x06\x40\x46\x42\xae\xcc\xcd\x00\x00\x06'
+    msg += b'\xa4\x46\x3f\x4c\xcc\xcd\x00\x00\x07\x08\x46\x00\x00\x00\x00\x00'
+    msg += b'\x00\x07\x6c\x46\x00\x00\x00\x00\x00\x00\x07\xd0\x46\x42\x0a\x66'
+    msg += b'\x66\x00\x00\x08\x34\x46\x40\x2a\x3d\x71\x00\x00\x08\x98\x46\x42'
+    msg += b'\xb8\x33\x33\x00\x00\x08\xfc\x46\x00\x00\x00\x00\x00\x00\x09\x60'
+    msg += b'\x46\x00\x00\x00\x00\x00\x00\x09\xc4\x46\x00\x00\x00\x00\x00\x00'
+    msg += b'\x0a\x28\x46\x00\x00\x00\x00\x00\x00\x0a\x8c\x46\x00\x00\x00\x00'
+    msg += b'\x00\x00\x0a\xf0\x46\x00\x00\x00\x00\x00\x00\x0b\x54\x46\x3e\x05'
+    msg += b'\x1e\xb8\x00\x00\x0b\xb8\x46\x43\xe2\x42\x8f\x00\x00\x0c\x1c\x46'
+    msg += b'\x00\x00\x00\x00\x00\x00\x0c\x80\x46\x43\x04\x4a\x3d\x00\x00\x0c'
+    msg += b'\xe4\x46\x3e\x0f\x5c\x29\x00\x00\x0d\x48\x46\x43\xad\x48\xf6\x00'
+    msg += b'\x00\x0d\xac\x46\x00\x00\x00\x00\x00\x00\x0e\x10\x46\x00\x00\x00'
+    msg += b'\x00\x00\x00\x0e\x74\x46\x00\x00\x00\x00\x00\x00\x0e\xd8\x46\x00'
+    msg += b'\x00\x00\x00\x00\x00\x0f\x3c\x53\x00\x00\x00\x00\x0f\xa0\x53\x00'
+    msg += b'\x00\x00\x00\x10\x04\x53\x55\xaa\x00\x00\x10\x68\x53\x00\x01\x00'
+    msg += b'\x00\x10\xcc\x53\x00\x00\x00\x00\x11\x30\x53\x00\x00\x00\x00\x11'
+    msg += b'\x94\x53\x00\x00\x00\x00\x11\xf8\x53\xff\xff\x00\x00\x12\x5c\x53'
+    msg += b'\x03\x20\x00\x00\x12\xc0\x53\x00\x02\x00\x00\x13\x24\x53\x04\x00'
+    msg += b'\x00\x00\x13\x88\x53\x04\x00\x00\x00\x13\xec\x53\x04\x00\x00\x00'
+    msg += b'\x14\x50\x53\x04\x00\x00\x00\x14\xb4\x53\x00\x01\x00\x00\x15\x18'
+    msg += b'\x53\x08\x04\x00\x00\x15\x7c\x53\x00\x00\x00\x00\x27\x10\x53\x00'
+    msg += b'\x02\x00\x00\x27\x74\x53\x00\x3c\x00\x00\x27\xd8\x53\x00\x68\x00'
+    msg += b'\x00\x28\x3c\x53\x05\x00\x00\x00\x28\xa0\x46\x43\x79\x00\x00\x00'
+    msg += b'\x00\x29\x04\x46\x43\x48\x00\x00\x00\x00\x29\x68\x46\x42\x48\x33'
+    msg += b'\x33\x00\x00\x29\xcc\x46\x42\x3e\x3d\x71\x00\x00\x2a\x30\x53\x00'
+    msg += b'\x01\x00\x00\x2a\x94\x46\x43\x37\x00\x00\x00\x00\x2a\xf8\x46\x42'
+    msg += b'\xce\x00\x00\x00\x00\x2b\x5c\x53\x00\x96\x00\x00\x2b\xc0\x53\x00'
+    msg += b'\x10\x00\x00\x2c\x24\x46\x43\x90\x00\x00\x00\x00\x2c\x88\x46\x43'
+    msg += b'\x95\x00\x00\x00\x00\x2c\xec\x53\x00\x06\x00\x00\x2d\x50\x53\x00'
+    msg += b'\x06\x00\x00\x2d\xb4\x46\x43\x7d\x00\x00\x00\x00\x2e\x18\x46\x42'
+    msg += b'\x3d\xeb\x85\x00\x00\x2e\x7c\x46\x42\x3d\xeb\x85\x00\x00\x2e\xe0'
+    msg += b'\x53\x00\x03\x00\x00\x2f\x44\x53\x00\x03\x00\x00\x2f\xa8\x46\x42'
+    msg += b'\x4d\xeb\x85\x00\x00\x30\x0c\x46\x42\x4d\xeb\x85\x00\x00\x30\x70'
+    msg += b'\x53\x00\x03\x00\x00\x30\xd4\x53\x00\x03\x00\x00\x31\x38\x46\x42'
+    msg += b'\x08\x00\x00\x00\x00\x31'
+    return msg
+
 def test_read_message(MsgContactInfo):
    m = MemoryStream(MsgContactInfo, (0,))
    m.read()         # read complete msg, and dispatch msg
@@ -359,23 +546,17 @@ def test_read_message_twice(ConfigNoTsunInv1, MsgInverterInd):
    m.append_msg(MsgInverterInd)
    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.msg_count == 1
-    assert m.id_str == b"R170000000000001" 
-    assert m.unique_id == 'R170000000000001'
-    assert int(m.ctrl)==145
-    assert m.msg_id==4
-    assert m.header_len==23
-    assert m.data_len==120
-    assert m._forward_buffer==b''
-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.msg_count == 2
+    assert m.msg_recvd[0]['ctrl']==145
+    assert m.msg_recvd[0]['msg_id']==4
+    assert m.msg_recvd[0]['header_len']==23
+    assert m.msg_recvd[0]['data_len']==120
+    assert m.msg_recvd[1]['ctrl']==145
+    assert m.msg_recvd[1]['msg_id']==4
+    assert m.msg_recvd[1]['header_len']==23
+    assert m.msg_recvd[1]['data_len']==120
    assert m.id_str == b"R170000000000001" 
    assert m.unique_id == 'R170000000000001'
-    assert int(m.ctrl)==145
-    assert m.msg_id==4
-    assert m.header_len==23
-    assert m.data_len==120
    assert m._forward_buffer==b''
    m.close()
 
@@ -446,35 +627,21 @@ def test_read_two_messages(ConfigTsunAllowAll, Msg2ContactInfo,MsgContactResp,Ms
    m.db.stat['proxy']['Unknown_Ctrl'] = 0
    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.msg_count == 1
-    assert m.id_str == b"R170000000000001" 
-    assert m.unique_id == 'R170000000000001'
-    assert int(m.ctrl)==145
-    assert m.msg_id==0 
-    assert m.header_len==23
-    assert m.data_len==25
-    assert m._forward_buffer==b''
-    assert m._send_buffer==MsgContactResp
-    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
-
-    m._send_buffer = bytearray(0) # clear send buffer for next test  
-    m.contact_name = b'solarhub'
-    m.contact_mail = b'solarhub@123456'
-    m._init_new_client_conn()
-    assert m._send_buffer==b'\x00\x00\x00,\x10R170000000000001\x91\x00\x08solarhub\x0fsolarhub@123456'
-
-    m._send_buffer = bytearray(0) # clear send buffer for next test
-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.msg_count == 2
    assert m.id_str == b"R170000000000002" 
    assert m.unique_id == 'R170000000000002'
-    assert int(m.ctrl)==145
-    assert m.msg_id==0 
-    assert m.header_len==23
-    assert m.data_len==25
+    m.contact_name = b'solarhub'
+    m.contact_mail = b'solarhub@123456'
+    assert m.msg_recvd[0]['ctrl']==145
+    assert m.msg_recvd[0]['msg_id']==0
+    assert m.msg_recvd[0]['header_len']==23
+    assert m.msg_recvd[0]['data_len']==25
+    assert m.msg_recvd[1]['ctrl']==145
+    assert m.msg_recvd[1]['msg_id']==0
+    assert m.msg_recvd[1]['header_len']==23
+    assert m.msg_recvd[1]['data_len']==25
    assert m._forward_buffer==b''
-    assert m._send_buffer==MsgContactResp2
+    assert m._send_buffer==MsgContactResp + MsgContactResp2
    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0

    m._send_buffer = bytearray(0) # clear send buffer for next test    
@@ -783,10 +950,10 @@ def test_msg_inv_ind(ConfigTsunInv1, MsgInverterInd, MsgInverterIndTsOffs, MsgIn
    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
    m.close()

-def test_msg_inv_ind2(ConfigTsunInv1, MsgInverterIndNew, MsgInverterIndTsOffs, MsgInverterAck):
+def test_msg_inv_ind1(ConfigTsunInv1, MsgInverterInd2, MsgInverterIndTsOffs, MsgInverterAck):
    ConfigTsunInv1
    tracer.setLevel(logging.DEBUG)
-    m = MemoryStream(MsgInverterIndNew, (0,))
+    m = MemoryStream(MsgInverterInd2, (0,))
    m.db.stat['proxy']['Unknown_Ctrl'] = 0
    m.db.stat['proxy']['Invalid_Data_Type'] = 0
    m.read()         # read complete msg, and dispatch msg
@@ -799,11 +966,12 @@ def test_msg_inv_ind2(ConfigTsunInv1, MsgInverterIndNew, MsgInverterIndTsOffs, M
    assert int(m.ctrl)==145
    assert m.msg_id==4
    assert m.header_len==23
-    assert m.data_len==1165
+    assert m.data_len==1263
    m.ts_offset = 0
    m._update_header(m._forward_buffer)
-    assert m._forward_buffer==MsgInverterIndNew
+    assert m._forward_buffer==MsgInverterInd2
    assert m._send_buffer==MsgInverterAck
+    assert m.db.get_db_value(Register.TS_GRID) == 1691243349
    m.close()

 def test_msg_inv_ind2(ConfigTsunInv1, MsgInverterIndNew, MsgInverterIndTsOffs, MsgInverterAck):
@@ -827,7 +995,39 @@ def test_msg_inv_ind2(ConfigTsunInv1, MsgInverterIndNew, MsgInverterIndTsOffs, M
    m._update_header(m._forward_buffer)
    assert m._forward_buffer==MsgInverterIndNew
    assert m._send_buffer==MsgInverterAck
+    assert m.db.get_db_value(Register.INVERTER_STATUS) == None
+    assert m.db.get_db_value(Register.TS_GRID) == None
+    m.db.db['grid'] = {'Output_Power': 100}
    m.close()
+    assert m.db.get_db_value(Register.INVERTER_STATUS) == None
+
+def test_msg_inv_ind3(ConfigTsunInv1, MsgInverterInd0W, MsgInverterAck):
+    '''test that after close the invert_status will be resetted if the grid power is <2W'''
+    ConfigTsunInv1
+    tracer.setLevel(logging.DEBUG)
+    m = MemoryStream(MsgInverterInd0W, (0,))
+    m.db.stat['proxy']['Unknown_Ctrl'] = 0
+    m.db.stat['proxy']['Invalid_Data_Type'] = 0
+    m.read()         # read complete msg, and dispatch msg
+    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
+    assert m.db.stat['proxy']['Invalid_Data_Type'] == 0
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.id_str == b"R170000000000001" 
+    assert m.unique_id == 'R170000000000001'
+    assert int(m.ctrl)==145
+    assert m.msg_id==4
+    assert m.header_len==23
+    assert m.data_len==1263
+    m.ts_offset = 0
+    m._update_header(m._forward_buffer)
+    assert m._forward_buffer==MsgInverterInd0W
+    assert m._send_buffer==MsgInverterAck
+    assert m.db.get_db_value(Register.INVERTER_STATUS) == None
+    assert m.db.db['grid']['Output_Power'] == 0.5
+    m.close()
+    assert m.db.get_db_value(Register.INVERTER_STATUS) == 0
+

 def test_msg_inv_ack(ConfigTsunInv1, MsgInverterAck):
    ConfigTsunInv1
@@ -1002,6 +1202,23 @@ def test_msg_iterator():
    assert test1 == 1
    assert test2 == 1

+def test_timestamp_cnv():
+    '''test converting inverter timestamps into utc'''
+    m = MemoryStream(b'')
+    ts = 1722645998453    # Saturday, 3. August 2024 00:46:38.453 (GMT+2:00)
+    utc =1722638798.453   # GMT: Friday, 2. August 2024 22:46:38.453
+    assert utc == m._utcfromts(ts)
+
+    ts = 1691246944000    # Saturday, 5. August 2023 14:49:04 (GMT+2:00)
+    utc =1691239744.0     # GMT: Saturday, 5. August 2023 12:49:04
+    assert utc == m._utcfromts(ts)
+
+    ts = 1704152544000    # Monday, 1. January 2024 23:42:24 (GMT+1:00)
+    utc =1704148944.0     # GMT: Monday, 1. January 2024 22:42:24
+    assert utc == m._utcfromts(ts)
+
+    m.close()
+
 def test_proxy_counter():
    # m = MemoryStream(b'')
    # m.close()
@@ -1202,35 +1419,37 @@ def test_msg_modbus_rsp2(ConfigTsunInv1, MsgModbusResp20):
    assert m.db.db == {}
    m.new_data['inverter'] = False

+    # m.read()         # read complete msg, and dispatch msg
+    # assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    # assert m.mb.err == 0
+    # assert m.msg_count == 1
+    # assert m._forward_buffer==MsgModbusResp20
+    # assert m._send_buffer==b''
+    # assert m.db.db == {'inverter': {'Version': 'V5.1.09', 'Rated_Power': 300}, 'grid': {'Timestamp': m._utc(), 'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'Timestamp': m._utc(), 'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
+    # assert m.db.get_db_value(Register.VERSION) == 'V5.1.09'
+    # assert m.db.get_db_value(Register.TS_GRID) == m._utc()
+    # assert m.new_data['inverter'] == True
+ 
+    # m.new_data['inverter'] = False    
+    # m.mb.req_pend = True
    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.mb.err == 0
-    assert m.msg_count == 1
-    assert m._forward_buffer==MsgModbusResp20
-    assert m._send_buffer==b''
-    assert m.db.db == {'inverter': {'Version': 'V5.1.09', 'Rated_Power': 300}, 'grid': {'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
-    assert m.db.get_db_value(Register.VERSION) == 'V5.1.09'
-    assert m.new_data['inverter'] == True
-
-    m.new_data['inverter'] = False    
-    m.mb.req_pend = True
-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.mb.err == 0
+    assert m.mb.err == 5
    assert m.msg_count == 2
    assert m._forward_buffer==MsgModbusResp20
    assert m._send_buffer==b''
-    assert m.db.db == {'inverter': {'Version': 'V5.1.09', 'Rated_Power': 300}, 'grid': {'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
+    assert m.db.db == {'inverter': {'Version': 'V5.1.09', 'Rated_Power': 300}, 'grid': {'Timestamp': m._utc(), 'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'Timestamp': m._utc(), 'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
    assert m.db.get_db_value(Register.VERSION) == 'V5.1.09'
-    assert m.new_data['inverter'] == False
+    assert m.db.get_db_value(Register.TS_GRID) == m._utc()
+    assert m.new_data['inverter'] == True

    m.close()

-def test_msg_modbus_rsp3(ConfigTsunInv1, MsgModbusResp20):
+def test_msg_modbus_rsp3(ConfigTsunInv1, MsgModbusResp21):
    '''Modbus response with a valid Modbus request must be forwarded'''
    ConfigTsunInv1
-    m = MemoryStream(MsgModbusResp20)
-    m.append_msg(MsgModbusResp20)
+    m = MemoryStream(MsgModbusResp21)
+    m.append_msg(MsgModbusResp21)

    m.mb.rsp_handler = m.msg_forward
    m.mb.last_addr = 1
@@ -1243,27 +1462,29 @@ def test_msg_modbus_rsp3(ConfigTsunInv1, MsgModbusResp20):
    assert m.db.db == {}
    m.new_data['inverter'] = False

-    m.read()         # read complete msg, and dispatch msg
-    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
-    assert m.mb.err == 0
-    assert m.msg_count == 1
-    assert m._forward_buffer==MsgModbusResp20
-    assert m._send_buffer==b''
-    assert m.db.db == {'inverter': {'Version': 'V5.1.09', 'Rated_Power': 300}, 'grid': {'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
-    assert m.db.get_db_value(Register.VERSION) == 'V5.1.09'
-    assert m.new_data['inverter'] == True
-    m.new_data['inverter'] = False
-    assert m.mb.req_pend == False
+    # m.read()         # read complete msg, and dispatch msg
+    # assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    # assert m.mb.err == 0
+    # assert m.msg_count == 1
+    # assert m._forward_buffer==MsgModbusResp21
+    # assert m._send_buffer==b''
+    # assert m.db.db == {'inverter': {'Version': 'V5.1.0E', 'Rated_Power': 300}, 'grid': {'Timestamp': m._utc(), 'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'Timestamp': m._utc(), 'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
+    # assert m.db.get_db_value(Register.VERSION) == 'V5.1.0E'
+    # assert m.new_data['inverter'] == True
+    # assert m.db.get_db_value(Register.TS_GRID) == m._utc()
+    # m.new_data['inverter'] = False
+    # assert m.mb.req_pend == False

    m.read()         # read complete msg, and dispatch msg
    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
    assert m.mb.err == 5
    assert m.msg_count == 2
-    assert m._forward_buffer==MsgModbusResp20
+    assert m._forward_buffer==MsgModbusResp21
    assert m._send_buffer==b''
-    assert m.db.db == {'inverter': {'Version': 'V5.1.09', 'Rated_Power': 300}, 'grid': {'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
-    assert m.db.get_db_value(Register.VERSION) == 'V5.1.09'
-    assert m.new_data['inverter'] == False
+    assert m.db.db == {'inverter': {'Version': 'V5.1.0E', 'Rated_Power': 300}, 'grid': {'Timestamp': m._utc(), 'Voltage': 225.9, 'Current': 0.41, 'Frequency': 49.99, 'Output_Power': 94.8}, 'env': {'Inverter_Temp': 22}, 'input': {'Timestamp': m._utc(), 'pv1': {'Voltage': 0.8, 'Current': 0.0, 'Power': 0.0}, 'pv2': {'Voltage': 34.5, 'Current': 2.89, 'Power': 99.8}, 'pv3': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}, 'pv4': {'Voltage': 0.0, 'Current': 0.0, 'Power': 0.0}}}
+    assert m.db.get_db_value(Register.VERSION) == 'V5.1.0E'
+    assert m.db.get_db_value(Register.TS_GRID) == m._utc()
+    assert m.new_data['inverter'] == True

    m.close()

@@ -1344,6 +1565,91 @@ async def test_msg_build_modbus_req(ConfigTsunInv1, MsgModbusCmd):
    assert m._send_buffer == b''
    assert m.writer.sent_pdu == b''
    m.close()
+
+def test_modbus_no_polling(ConfigNoMbPoll, MsgGetTime):
+    ConfigNoMbPoll
+    m = MemoryStream(MsgGetTime, (0,))
+    m.db.stat['proxy']['Unknown_Ctrl'] = 0
+    m.modbus_polling = False
+    m.read()         # read complete msg, and dispatch msg
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.id_str == b"R170000000000001" 
+    assert m.unique_id == 'R170000000000001'
+    assert int(m.ctrl)==145
+    assert m.msg_id==34
+    assert m.header_len==23
+    assert m.ts_offset==0
+    assert m.data_len==0
+    assert m._forward_buffer==MsgGetTime
+    assert m._send_buffer==b'\x00\x00\x00\x1b\x10R170000000000001\x91"\x00\x00\x01\x89\xc6,_\x00'
+    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
+    m.close()
+
+@pytest.mark.asyncio
+async def test_modbus_polling(ConfigTsunInv1, MsgGetTime):
+    ConfigTsunInv1
+    assert asyncio.get_running_loop()
+
+    m = MemoryStream(MsgGetTime, (0,))
+    assert asyncio.get_running_loop() == m.mb_timer.loop
+    m.db.stat['proxy']['Unknown_Ctrl'] = 0
+    assert m.mb_timer.tim == None
+    m.read()         # read complete msg, and dispatch msg
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.id_str == b"R170000000000001" 
+    assert m.unique_id == 'R170000000000001'
+    assert int(m.ctrl)==145
+    assert m.msg_id==34
+    assert m.header_len==23
+    assert m.ts_offset==0
+    assert m.data_len==0
+    assert m._forward_buffer==MsgGetTime
+    assert m._send_buffer==b'\x00\x00\x00\x1b\x10R170000000000001\x91"\x00\x00\x01\x89\xc6,_\x00'
+    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
+
+    m._send_buffer = bytearray(0) # clear send buffer for next test
+    m.state = State.up
+    assert m.mb_timeout == 0.5
+    assert next(m.mb_timer.exp_count) == 0
+    
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==b'\x00\x00\x00 \x10R170000000000001pw\x00\x01\xa3(\x08\x01\x030\x00\x000J\xde'
+    assert m._send_buffer==b''
+    
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==b'\x00\x00\x00 \x10R170000000000001pw\x00\x01\xa3(\x08\x01\x030\x00\x000J\xde'
+    assert m._send_buffer==b''
+    
+    await asyncio.sleep(0.5)
+    assert m.writer.sent_pdu==b'\x00\x00\x00 \x10R170000000000001pw\x00\x01\xa3(\x08\x01\x03\x20\x00\x00`N"'
+    assert m._send_buffer==b''
+    assert next(m.mb_timer.exp_count) == 4
+    m.close()
+
+def test_broken_recv_buf(ConfigTsunAllowAll, BrokenRecvBuf):
+    ConfigTsunAllowAll
+    m = MemoryStream(BrokenRecvBuf, (0,))
+    m.db.stat['proxy']['Unknown_Ctrl'] = 0
+    assert m.db.stat['proxy']['Invalid_Data_Type'] == 0
+    m.read()         # read complete msg, and dispatch msg
+    assert not m.header_valid  # must be invalid, since msg was handled and buffer flushed
+    assert m.msg_count == 1
+    assert m.id_str == b"R170000000000001" 
+    assert m.unique_id == 'R170000000000001'
+    assert m.msg_recvd[0]['ctrl']==145
+    assert m.msg_recvd[0]['msg_id']==4
+    assert m.msg_recvd[0]['header_len']==23
+    assert m.msg_recvd[0]['data_len']==1263
+    # assert m._forward_buffer==b''
+    # assert m._send_buffer==b''
+    assert m.db.stat['proxy']['Unknown_Ctrl'] == 0
+    assert m.db.stat['proxy']['Invalid_Data_Type'] == 1
+
+    m.close()
+
+
 '''
 def test_zombie_conn(ConfigTsunInv1, MsgInverterInd):
    ConfigTsunInv1
--- a/app/tests/timestamp_old.svg
+++ b/app/tests/timestamp_old.svg
--- a/app/tests/timestamp_old.yuml
+++ b/app/tests/timestamp_old.yuml
@@ -1,26 +0,0 @@
-// {type:sequence}
-// {generate:true}
-
-[Inverter]ContactInd>[Proxy] 
-[Proxy]-[note: store Contact Info in proxy{bg:cornsilk}]
-[Proxy]ContactRsp (Ok).>[Inverter]
-
-[Inverter]getTimeReq>[Proxy]
-[Proxy]ContactInd>[Cloud]
-[Cloud]ContactRsp (Ok).>[Proxy]
-[Proxy]getTimeReq>[Cloud]
-[Cloud]TimeRsp (time).>[Proxy]
-[Proxy]TimeRsp (time).>[Inverter]
-[Inverter]-[note: set clock in inverter{bg:cornsilk}]
-
-[Inverter]DataInd (ts:=time)>[Proxy] 
-[Proxy]DataRsp>[Inverter] 
-[Proxy]DataInd (ts)>>[Cloud] 
-[Proxy]DataInd>>[MQTT-Broker] 
-[Cloud]DataRsp>>[Proxy]
-
-[Inverter]DataInd (ts:=time)>[Proxy] 
-[Proxy]DataRsp>[Inverter] 
-[Proxy]DataInd (ts)>>[Cloud] 
-[Proxy]DataInd>>[MQTT-Broker] 
-[Cloud]DataRsp>>[Proxy]
Author	SHA1	Message	Date
Stefan Allius	47f7580184	MQTT timestamps and protocol improvements (#140 ) * add TS_INPUT, TS_GRID and TS_TOTAL * prepare MQTT timestamps - add _set_mqtt_timestamp method - fix hexdump printing * push dev and debug images to docker.io * add unix epoche timestamp for MQTT pakets * set timezone for unit tests * set name für setting timezone step * trigger new action * GEN3 and GEN3PLUS: handle multiple message - read: iterate over the receive buffer - forward: append messages to the forward buffer - _update_header: iterate over the forward buffer * GEN3: optimize timeout handling - longer timeout in state init and reveived - got to state pending only from state up * update changelog * cleanup	2024-08-04 19:43:09 +02:00
Stefan Allius	b8e44b7379	bump aiomqtt and schema to latest release (#137 )	2024-07-27 20:36:17 +02:00
Stefan Allius	95954fa84e	S allius/issue134 (#135 ) * add polling invertval and method ha_remove() * add client_mode arg to constructors - add PollingInvervall * hide some topics in client mode - we hide topics in HA by sending an empty register MQTT topic during HA auto configuration * add client_mode value * update class diagram * fix modbus close handler - fix empty call and cleanup que - add unit test * don't sent an initial 1710 msg in client mode * change HA icon for inverter status * increase test coverage * accelerate timer tests	2024-07-27 19:37:40 +02:00
Stefan Allius	3c656e8c63	Merge branch 'dev-0.10' of https://github.com/s-allius/tsun-gen3-proxy into dev-0.10	2024-07-24 22:37:09 +02:00
Stefan Allius	387c014763	reset inverter state on close - workaround which reset the inverter status to offline when the inverter has a very low output power on connection close	2024-07-24 22:36:51 +02:00
Stefan Allius	19916453f2	Update README.md (#133 )	2024-07-23 23:38:48 +02:00
Stefan Allius	7f81799dd9	S allius/issue131 (#132 ) * Make __publish_outstanding_mqtt public * update proxy counter - on client mode connection establishment or disconnecting update tje counection counter	2024-07-23 21:54:01 +02:00
Stefan Allius	dc4728122e	S allius/issue128 (#130 ) * set Register.NO_INPUTS fix to 4 for GEN3PLUS * don't set Register.NO_INPUTS per MODBUS * fix unit tests * register OUTPUT_COEFFICIENT at HA * update changelog * - Home Assistant: improve inverter status value texts * - GEN3: add inverter status * on closing send outstanding MQTT data to the broker * force MQTT publish on every conn open and close * reset inverter state on close - workaround which reset the inverter status to offline when the inverter has a very low output power on connection close * improve client modified - reduce the polling cadence to 30s - set controller statistics for HA * client mode set controller IP for HA	2024-07-22 23:27:17 +02:00
Stefan Allius	6f35c47254	S allius/issue125 (#127 ) * fix linter warning * move sequence diagramm to wiki * catch asyncio.CancelledError	2024-07-15 21:45:45 +02:00
Stefan Allius	92a5fd22b8	S allius/issue120 (#126 ) * add config option to disable the modbus polling * read more modbus regs in polling mode * extend connection timeouts if polling mode is disabled * update changelog	2024-07-14 17:04:05 +02:00
Stefan Allius	f3dd87e03c	make the maximum output coefficient configurable (#124 )	2024-07-11 19:31:30 +02:00
Stefan Allius	112c7e66f2	S allius/issue117 (#122 ) * add shutdown flag * add more register definitions * add start commando for client side connections * add first support for port 8899 * fix shutdown * add client_mode configuration * read client_mode config to setup inverter connections * add client_mode connections over port 8899 * add preview build * add documentation for client_mode * catch os error and log thme with DEBUG level * update changelog	2024-07-10 20:43:03 +02:00
Stefan Allius	c7a33b4a35	MODBUS: the last digit of the inverter version is a hexadecimal number (#121 )	2024-07-10 20:28:12 +02:00
Stefan Allius	da8f39c401	Update README.md describe the new client-mode over port 8899 for GEN3PLUS	2024-07-08 20:31:36 +02:00
Stefan Allius	e4ff17e600	S allius/issue117 (#118 ) * add shutdown flag * add more register definitions * add start commando for client side connections * add first support for port 8899 * fix shutdown * add client_mode configuration * read client_mode config to setup inverter connections * add client_mode connections over port 8899 * add preview build	2024-07-08 19:08:58 +02:00