Request Weights not to check the Node address in the Modbus Query, ask them to check only the IP address, is good enough to identify the Slave/Master. In some systems, we can turn off the Node address check. Just have a try.
We have two option Option1: Disable Node address check in Slave unit Option2: We need to match the node address between Master and Slave. We have provision to enter node address only from 1 to 255 in Control Builder and we cant use 0.