We have a problem reading modbus registers on a Cerbo GX from a PLC.
When trying to read from unit id 226, which is in the list of available services, we get this error message:
"Error processing function code 3, unit id 255, start address 257, quantity 68, src 192.168.11.11: Modbus address 257 is not registered"
Note that the error message says unid id 255, not 226.
Unit id 255 isn't valid either, is it?
Has anyone experienced this issue?