fix solaredge (#2872)

* fix solaredge

* fix

* clean up

Author: LKuemmel

packages/modules/devices/solaredge/solaredge/counter.py

@@ -48,6 +48,7 @@ def update(self):
             (self.registers.power_factors, [ModbusDataType.INT_16]*3),
             (self.registers.power_factors_scale, ModbusDataType.INT_16),
             (self.registers.frequency, ModbusDataType.INT_16),
+            (self.registers.frequency_scale, ModbusDataType.INT_16),
             (self.registers.imported, ModbusDataType.UINT_32),
             (self.registers.exported, ModbusDataType.UINT_32),
             (self.registers.imp_exp_scale, ModbusDataType.INT_16),

packages/modules/devices/solaredge/solaredge/inverter.py

@@ -59,7 +59,7 @@ def update(self) -> None:
 
     def read_state(self):
         resp = self.__tcp_client.read_holding_registers_bulk(
-            Register.POWER, 18, mapping=self.REG_MAPPING, unit=self.component_config.configuration.modbus_id)
+            Register.CURRENTS, 30, mapping=self.REG_MAPPING, unit=self.component_config.configuration.modbus_id)
 
         power = scale_registers(resp[Register.POWER], resp[Register.POWER_SCALE]) * -1
         imported, _ = self.sim_counter.sim_count(power)