I have 3 koyo PLC's in series. The 1st and 3rd are reporting values correctly but the 2nd is reporting negative values. The values in the PLC and HMI are reading positive values. They are connected to port 2 serial built on the PLC. All modbus settings are the same as the other 2 except for the ID of course. No high voltage is in the cabinet, only 24v.
Looking for any advice on what else to look for. Thank you!
Looking for any advice on what else to look for. Thank you!