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read isolation resistance #41

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2 changes: 2 additions & 0 deletions custom_components/fronius_modbus/const.py
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,8 @@
'VArPct_Ena': ['Limit VAr control', 'VArPct_Ena', None, None, None, None, EntityCategory.DIAGNOSTIC],
'PhVphA': ['AC voltage L1-N', 'PhVphA', SensorDeviceClass.VOLTAGE, SensorStateClass.MEASUREMENT, 'V', 'mdi:lightning-bolt', None],
'unit_id': ['Modbus ID', 'i_unit_id', None, None, None, None, EntityCategory.DIAGNOSTIC],

'isolation_resistance': ['Isolation Resistance', 'isolation_resistance', None, SensorStateClass.MEASUREMENT, 'MΩ', 'mdi:omega', None],
}

INVERTER_SYMO_SENSOR_TYPES = {
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10 changes: 8 additions & 2 deletions custom_components/fronius_modbus/froniusmodbusclient.py
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Expand Up @@ -246,10 +246,16 @@ async def read_inverter_status_data(self):

StActCtl = self._client.convert_from_registers(regs[33:35], data_type = self._client.DATATYPE.UINT32)

Ris = self._client.convert_from_registers(regs[42:43], data_type = self._client.DATATYPE.UINT16)
Ris_SF = self._client.convert_from_registers(regs[43:44], data_type = self._client.DATATYPE.UINT16)

self.data['pv_connection'] = CONNECTION_STATUS_CONDENSED[PVConn]
self.data['storage_connection'] = CONNECTION_STATUS_CONDENSED[StorConn]
self.data['storage_connection'] = CONNECTION_STATUS_CONDENSED[StorConn]
self.data['ecp_connection'] = ECP_CONNECTION_STATUS[ECPConn]
self.data['inverter_controls'] = self.bitmask_to_string(StActCtl, INVERTER_CONTROLS, 'Normal')
self.data['inverter_controls'] = self.bitmask_to_string(StActCtl, INVERTER_CONTROLS, 'Normal')
# Adjust the scaling factor because isolation resistance is provided
# in Ohm and stored in Mega Ohm.
self.data['isolation_resistance'] = self.calculate_value(Ris, Ris_SF-6)

return True

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