ERROR (MainThread) [homeassistant.components.modbus.modbus] Pymodbus: SungrowSHx: Error: device: 1 address: 5740 -> Exception Response(132, 4, IllegalAddress)

[MaeChr]

Hello!
There seams a Problem with the adress 5740.
Error in Error Log
ERROR (MainThread) [homeassistant.components.modbus.modbus] Pymodbus: SungrowSHx: Error: device: 1 address: 5740 -> Exception Response(132, 4, IllegalAddress)

[Gnarfoz]

That's one of the undocumented registers containing data about the DTSU666 smart energy meter. Do you perhaps not have one?

[MaeChr]

Yes this DTSU666 smart energy meter is installed

[Gnarfoz]

Then it's going to be hard to debug, since it's not officially documented. Did any of the "Meter *" sensors work for your before?

You could try generic things like power cycling the entire system.

[MaeChr]

Yes for me it seams that everything works.
I found a thread where this register is discussed

https://gist.github.com/dnoegel/543c72ef722365a3934bbad0bb43e222?permalink_comment_id=5018788#gistcomment-5018788

Register 5740, 5741, 5742 for voltages per phase at smart meter. Attention: 5018/19/20 contain the voltages delivered at inverter!

[Gnarfoz]

That doesn't really add anything we didn't know, though. 🤷