[Bug]: Growatt - MIN 3600TL-X unable to auto connect.

[Cees-JanBerg]

Describe the bug

I have 3 Growatt inverters, 2 LT-XE and 1 LT-X. First I connected everything to an RS485 TO ETH (B) the 120Ohm resistors on both ends. This turned out not to be necessary and I removed it again, now I have 3.5Vdc on all connectors. After this I tried everything, without being able to connect to the LT-X inverter. In the end I loaded 1 inverter into the integration with address 01. After it was connected, I switched the plug to the inverter that wouldn't connect. I changed the address to 01 and I was connected. then loaded the other inverters at addresses 2 and 3 and everything works.

I have no idea why it didn't work, but I suspect something went wrong loading the registers. There could be a difference between the versions that prevents it from being found.

Integration Version

2025.01.7

Homeassistant core version

2025.1.2

Inverter brand

Growatt

Plugin used

plugin_growatt.py

Serial prefix

AK1.0/AKAA2001

Connection Method

RS485 TO ETH (B)

Detailed Error Log

No response

Additional context

No response

[wills106]

Try 2025.01.8 there was an issue with pyModbbus 3.8.3 in Integration 2025.01.7

[Cees-JanBerg]

Thanks for the quick response,
I tried the new version, but the inverter no longer came online after this. After removing the integration I tried to configure it again. this doesn't work normally. it only works if I first load another inverter to the modbus address and then adjust the addresses in the inverter.