No response from modbus slave 2, register 0

Installation Home Assistant OS
41

I follow this post… I need help for this.

19-12-31 07:30:04 DEBUG (SyncWorker_4) [pymodbus.transaction] Current transaction state - TRANSCATION_COMPLETE
2019-12-31 07:30:04 DEBUG (SyncWorker_4) [pymodbus.transaction] Running transaction 11
2019-12-31 07:30:04 DEBUG (SyncWorker_4) [pymodbus.transaction] SEND: 0x1 0x4 0x2 0x4b 0x0 0x1 0x40 0x64
2019-12-31 07:30:04 DEBUG (SyncWorker_4) [pymodbus.framer.rtu_framer] Changing state to IDLE - Last Frame End - 1577788204.027299, Current Time stamp - 1577788204.05489
2019-12-31 07:30:04 DEBUG (SyncWorker_4) [pymodbus.client.sync] New Transaction state ‘SENDING’
2019-12-31 07:30:04 DEBUG (SyncWorker_4) [pymodbus.transaction] Changing transaction state from ‘SENDING’ to ‘WAITING FOR REPLY’
2019-12-31 07:30:07 DEBUG (SyncWorker_4) [pymodbus.transaction] Incomplete message received, Expected 7 bytes Recieved 0 bytes !!!
2019-12-31 07:30:07 DEBUG (SyncWorker_4) [pymodbus.transaction] Changing transaction state from ‘WAITING FOR REPLY’ to ‘PROCESSING REPLY’
2019-12-31 07:30:07 DEBUG (SyncWorker_4) [pymodbus.transaction] RECV:
2019-12-31 07:30:07 DEBUG (SyncWorker_4) [pymodbus.framer.rtu_framer] Frame - [b’’] not ready
2019-12-31 07:30:07 DEBUG (SyncWorker_4) [pymodbus.transaction] Getting transaction 11
2019-12-31 07:30:07 DEBUG (SyncWorker_4) [pymodbus.transaction] Changing transaction state from ‘PROCESSING REPLY’ to ‘TRANSACTION_COMPLETE’
2019-12-31 07:30:07 ERROR (SyncWorker_4) [homeassistant.components.modbus.sensor] No response from hub hub1, slave 1, register 587

42

Are you using Modbus RTU? It’s working well?

43

Gave up on that long ago. I’m using Node-red to pick up the registers.

44

@PierreScerri But what physical connection you use? Modbus RTU with USB To RS-485
Converter? And then the registers pick up with node red?

45

Exactly. Works like a charm and costs nothing.