Sigenery: add bat control (#2935)

* add bat control

* fix register address

Author: ndrsnhs

packages/modules/devices/sigenergy/sigenergy/bat.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 import logging
-from typing import TypedDict, Any
+from typing import TypedDict, Any, Optional
 from modules.common.abstract_device import AbstractBat
 from modules.common.component_state import BatState
 from modules.common.component_type import ComponentDescriptor
@@ -29,6 +29,7 @@ def initialize(self) -> None:
         self.store = get_bat_value_store(self.component_config.id)
         self.fault_state = FaultState(ComponentInfo.from_component_config(self.component_config))
         self.sim_counter = SimCounter(self.__device_id, self.component_config.id, prefix="speicher")
+        self.last_mode = 'Undefined'
 
     def update(self) -> None:
         unit = self.component_config.configuration.modbus_id
@@ -46,5 +47,25 @@ def update(self) -> None:
         )
         self.store.set(bat_state)
 
+    def set_power_limit(self, power_limit: Optional[int]) -> None:
+        unit = self.component_config.configuration.modbus_id
+        log.debug(f'last_mode: {self.last_mode}')
+        # Steuerung erfolgt über SoC (mit Faktor 10)
+        if power_limit is None:
+            log.debug("Keine Batteriesteuerung, Selbstregelung durch Wechselrichter")
+            if self.last_mode is not None:
+                # Entladesperre ab 5%, Ansonsten Eigenregelung
+                self.__tcp_client.write_registers(40048, [50], data_type=ModbusDataType.UINT_16, unit=unit)
+                self.last_mode = None
+        else:
+            log.debug("Aktive Batteriesteuerung. Batterie wird auf Stop gesetzt und nicht entladen")
+            if self.last_mode != 'stop':
+                # Entladesperre auch bei 100% SoC
+                self.__tcp_client.write_registers(40048, [1000], data_type=ModbusDataType.UINT_16, unit=unit)
+                self.last_mode = 'stop'
+
+    def power_limit_controllable(self) -> bool:
+        return True
+
 
 component_descriptor = ComponentDescriptor(configuration_factory=SigenergyBatSetup)