My Modbus to my SMA inverter has been very stable and I haven’t changed anything about it. I updated the HA Core from 2023.11.3 to 2023.12.3 on 18 Dec, then at around 4am on 19 Dec, the Modbus stopped working (timeouts). I fiddled around (re-booting etc) and it came good. However, during reboots (which took much longer than usual, I was getting “Something is blocking Home Assistant from wrapping up the start up phase. We’re going to continue anyway” in the Logfile.
This morning (also just after 4am), the Modbus went down again. Reboots have been giving the “Something is blocking Home Assistant from wrapping up the start up phase” error in the log again, and I haven’t been able to coax the Modbus into life.
The HA Core Logs show:
Logger: homeassistant.components.modbus.modbus
Source: components/modbus/modbus.py:355
Integration: Modbus (documentation, issues)
First occurred: 3:19:23 PM (1 occurrences)
Last logged: 3:19:23 PM
Pymodbus: SMA: Error: device: 3 address: 30775 → Modbus Error: [Connection]
Failed to connect[ModbusTcpClient(10.1.1.19:502)]
- which doesn’t give me any clue why it’s not connecting.