Changing the ID of a Modbus RTU server
Each server is identified by a server ID which is unique in the scope of the client. In the device tree, servers are sorted by their server IDs .
- Open the device view.
- In the device tree, double-click the server you want to delete a data item from.
- In the Server ID combo box, enter a unique server ID in the range of 1 to 247.
- Press Enter.

If you entered an invalid server ID (e.g. the number is out of range), the server ID will be automatically reset to the last valid server ID.