Modbus binding after migration OH1->OH2

[rossko57]

@sherif

Modbus serial device /dev/ttyUSB1 doesn’t exist!

Okay, so it’s not the same error at all.

What you are doing now sounds right, two separate serial buses. Binding should support that.

I don’t know much about serial ports and user permissions, but these are important. This might give a pointer

Serial Error: Port /dev/ttyACM0 does not exist

The binding also uses the “does not exist” message for cases when it simply doesn’t have permission to access the device. On my system (raspbian), ls -l /dev/ttyACM0 gives this output: crw-rw---- 1 root dialout 166, 0 Oct 16 10:18 /dev/ttyACM0 which means that only members of the dialout group can access the device. You can add the openhab user to the dialout group with the command: adduser openhab dialout . After that, you’ll need to restart the OpenHAB service so it’ll see its new group m…