![Modbus poll connection failed](https://kumkoniak.com/34.jpg)
![modbus poll connection failed modbus poll connection failed](https://img2018.cnblogs.com/blog/1783585/202002/1783585-20200204113554779-1742102639.png)
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22:18:51.845 - failed to read: Error reading response
![modbus poll connection failed modbus poll connection failed](https://www.aggsoft.com/serial-data-logger/tutorials/modbus-polling/how-to-image001.png)
22:18:51.066 - execute try 1 error: I/O exception - failed to read 22:18:51.064 - failed to read: Error reading response 22:18:50.518 - execute try 1 error: I/O exception - failed to read 22:18:50.517 - failed to read: Error reading response As soon as I enable other slaves I get continuous stream of this: 22:18:50.515 - Last request: 02 03 00 00 00 05 85 fa With one slave, even with default 200ms polling I see no errors in the log. !category-topic/openhab/modbus/gdtZCWvSP_U but I’m running openhab 1.7.1. The symptoms are similar to what was described in this thread: I have a problem with my serial modbus setup (small Arduino based nodes using SimpleModbusSlaveNG).
![Modbus poll connection failed](https://kumkoniak.com/34.jpg)