Code release 2021.7.0b0 broke my Modbus - what do I do next?

Installation Home Assistant OS
1

My Modbus doesn’t work with core release 2021.7.0b0 and later. The logfile doesn’t really show much other than “WARNING (SyncWorker_5) [homeassistant.components.modbus.modbus] modbus modbus_hub communication open”. This doesn’t mean anything to me.

I am a bit of a HA newbie, and didn’t know much about upgrading components of HA - until today. I hadn’t upgraded since I installed earlier this year. Today, I installed the latest (2021.10.6) and the Modbus connection to my solar PV inverter stopped working. I downgraded and upgraded many times untill I narrowed it down to this:
2021.6.6 - the Modbus works
2021.7.0b0 - Modbus doesn’t work

(2021.6.6 worked, then I jumped to 2021.7.0b3 and it stopped working. I then worked my way back through 2021.7.0b0 (where it still didn’t work) to 2021.6.6 (where it started working again).

2

That release had breaking changes to the modbus config, what does yours look like?

3

Read the Breaking Changes section concerning ModBus:

You could have saved yourself a lot of time and frustration by simply reviewing the Release Notes. Much faster than installing/uninstalling multiple versions.

4

I was jumping from 2021.4.something :slight_smile:

5

Doesn’t matter which version you started from; things change from one release to another and reading the Release Notes, especially the Breaking Changes section, is a good way to prevent problems.

You will have to revise how your ModBus integration is configured.

6

thank you all for your help - it is going again