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add Modbus polling mode for DCU1000 (#305)

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* add Modbus scanning mode

* fix modbus polling for DCU 1000

* add modbus register for DCU 1000

* calculate meta values from modbus regs

* update changelog

* reduce code duplication

* refactor modbus_scan

* add additional unit tests
This commit is contained in:
Stefan Allius
2025-03-11 19:47:37 +01:00
committed by GitHub
parent be60f9ea1e
commit 88cb01f613
9 changed files with 386 additions and 32 deletions
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57
app/src/gen3plus/solarman_v5.py
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@@ -322,6 +322,8 @@ class SolarmanV5(SolarmanBase):
self.at_acl = g3p_cnf['at_acl']
self.sensor_list = 0
self.mb_regs = [{'addr': 0x3000, 'len': 48},
{'addr': 0x2000, 'len': 96}]
'''
Our puplic methods
@@ -357,7 +359,16 @@ class SolarmanV5(SolarmanBase):
self.new_data['controller'] = True
self.state = State.up
self._send_modbus_cmd(Modbus.READ_REGS, 0x3000, 48, logging.DEBUG)
if self.mb_scan:
self._send_modbus_cmd(self.mb_inv_no, Modbus.READ_REGS,
self.mb_start_reg, self.mb_bytes,
logging.INFO)
else:
self._send_modbus_cmd(Modbus.INV_ADDR, Modbus.READ_REGS,
self.mb_regs[0]['addr'],
self.mb_regs[0]['len'], logging.DEBUG)
self.mb_timer.start(self.mb_timeout)
def new_state_up(self):
@@ -377,16 +388,16 @@ class SolarmanV5(SolarmanBase):
self.ifc.fwd_add(build_msg)
self.ifc.fwd_add(struct.pack('<BB', 0, 0x15)) # crc & stop
def __set_config_parms(self, inv: dict, serial_no: str):
def _set_config_parms(self, inv: dict, serial_no: str = ""):
'''init connection with params from the configuration'''
self.node_id = inv['node_id']
self.sug_area = inv['suggested_area']
self.modbus_polling = inv['modbus_polling']
super()._set_config_parms(inv)
self.sensor_list = inv['sensor_list']
if 0 == self.sensor_list:
snr = serial_no[:3]
if '410' == snr:
self.sensor_list = 0x3026
self.mb_regs = [{'addr': 0x0000, 'len': 45}]
else:
self.sensor_list = 0x02b0
self.db.set_db_def_value(Register.SENSOR_LIST,
@@ -394,9 +405,6 @@ class SolarmanV5(SolarmanBase):
logging.debug(f"Use sensor-list: {self.sensor_list:#04x}"
f" for '{serial_no}'")
if self.mb:
self.mb.set_node_id(self.node_id)
def _set_serial_no(self, snr: int):
'''check the serial number and configure the inverter connection'''
serial_no = str(snr)
@@ -411,7 +419,7 @@ class SolarmanV5(SolarmanBase):
# logger.debug(f'key: {key} -> {inv}')
if (type(inv) is dict and 'monitor_sn' in inv
and inv['monitor_sn'] == snr):
self.__set_config_parms(inv, key)
self._set_config_parms(inv, key)
self.db.set_pv_module_details(inv)
logger.debug(f'SerialNo {serial_no} allowed! area:{self.sug_area}') # noqa: E501
@@ -474,12 +482,18 @@ class SolarmanV5(SolarmanBase):
def mb_timout_cb(self, exp_cnt):
self.mb_timer.start(self.mb_timeout)
if self.mb_scan:
self._send_modbus_scan()
else:
self._send_modbus_cmd(Modbus.INV_ADDR, Modbus.READ_REGS,
self.mb_regs[0]['addr'],
self.mb_regs[0]['len'], logging.INFO)
self._send_modbus_cmd(Modbus.READ_REGS, 0x3000, 48, logging.INFO)
if 1 == (exp_cnt % 30):
# logging.info("Regular Modbus Status request")
self._send_modbus_cmd(Modbus.READ_REGS, 0x2000, 96, logging.INFO)
if 1 == (exp_cnt % 30) and len(self.mb_regs) > 1:
# logging.info("Regular Modbus Status request")
self._send_modbus_cmd(Modbus.INV_ADDR, Modbus.READ_REGS,
self.mb_regs[1]['addr'],
self.mb_regs[1]['len'], logging.INFO)
def at_cmd_forbidden(self, cmd: str, connection: str) -> bool:
return not cmd.startswith(tuple(self.at_acl[connection]['allow'])) or \
@@ -672,16 +686,25 @@ class SolarmanV5(SolarmanBase):
return
self.__forward_msg()
def __parse_modbus_rsp(self, data):
def __parse_modbus_rsp(self, data, modbus_msg_len):
inv_update = False
self.modbus_elms = 0
if (self.mb_scan):
self._dump_modbus_scan(data, 14, modbus_msg_len)
ts = self._timestamp()
for key, update, _ in self.mb.recv_resp(self.db, data[14:]):
self.modbus_elms += 1
if update:
if key == 'inverter':
inv_update = True
self._set_mqtt_timestamp(key, self._timestamp())
self._set_mqtt_timestamp(key, ts)
self.new_data[key] = True
for key, update in self.db.calc(self.sensor_list, self.node_id):
if update:
self._set_mqtt_timestamp(key, ts)
self.new_data[key] = True
return inv_update
def __modbus_command_rsp(self, data):
@@ -691,7 +714,7 @@ class SolarmanV5(SolarmanBase):
# logger.debug(f'modbus_len:{modbus_msg_len} accepted:{valid}')
if valid == 1 and modbus_msg_len > 4:
# logger.info(f'first byte modbus:{data[14]}')
inv_update = self.__parse_modbus_rsp(data)
inv_update = self.__parse_modbus_rsp(data, modbus_msg_len)
if inv_update:
self.__build_model_name()