[Bug]: Something went wrong reading from modbus

[matomatusov]

Describe the bug

Logger: custom_components.solax_modbus
Source: custom_components/solax_modbus/init.py:707
integration: SolaX Inverter Modbus (documentation, issues)
First occurred: 11:56:11 AM (6 occurrences)
Last logged: 4:38:34 PM

Something went wrong reading from modbus
Traceback (most recent call last):
File "/config/custom_components/solax_modbus/init.py", line 707, in async_read_modbus_data
res = await self.async_read_modbus_registers_all(group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/solax_modbus/init.py", line 895, in async_read_modbus_registers_all
data[descr.key] = descr.value_function(0, descr, data)
~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
File "/config/custom_components/solax_modbus/plugin_solax.py", line 232, in value_function_battery_voltage_cell_difference
return datadict.get('cell_voltage_high', 0) - datadict.get('cell_voltage_low',0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
TypeError: unsupported operand type(s) for -: 'NoneType' and 'NoneType'

Integration Version

2024.11.2

Homeassistant core version

core-2024.12.2

Inverter brand

Solax Power

Plugin used

plugin_solax.py

Serial prefix

H34A10

Inverter firmware versions

ARM1.44 DSP1.47

Connection Method

Packet Wifi + LAN 3.0

Dongle firmware

1.002.11

Detailed Error Log

No response

Additional context

No response

[HGordonH]

I am getting the same error - means the readings are non sensical.

Logger: custom_components.solax_modbus
Source: custom_components/solax_modbus/init.py:707
integration: SolaX Inverter Modbus (documentation, issues)
First occurred: 16 December 2024 at 19:59:40 (38 occurrences)
Last logged: 07:06:33

Something went wrong reading from modbus
Traceback (most recent call last):
File "/config/custom_components/solax_modbus/init.py", line 707, in async_read_modbus_data
res = await self.async_read_modbus_registers_all(group)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/solax_modbus/init.py", line 895, in async_read_modbus_registers_all
data[descr.key] = descr.value_function(0, descr, data)
~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
File "/config/custom_components/solax_modbus/plugin_solax.py", line 232, in value_function_battery_voltage_cell_difference
return datadict.get('cell_voltage_high', 0) - datadict.get('cell_voltage_low',0)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
TypeError: unsupported operand type(s) for -: 'NoneType' and 'NoneType'