# Configuring a Modbus RTU network

A Modbus RTU network is configured by using a UR20-1COM-232-485-422 I/O module as Modbus RTU client.

- Adding a Modbus RTU client
- Deleting a Modbus RTU client
- Adding a Modbus RTU server
- Deleting a Modbus RTU server
- Changing the ID of a Modbus RTU server
- Adding a data item to a Modbus RTU server
- Deleting a data item from a Modbus RTU server
- Changing the name of a data item of a Modbus RTU server
- Changing the function code of a data item of a Modbus RTU server
- Changing the offset of a data item of a Modbus RTU server
- Changing the quantity of a data item of a Modbus RTU server
- Mapping a data item of a Modbus RTU device to a global variable
- Creating a trigger channel for a Modbus RTU request
- Retrieving the communication status of a Modbus RTU device
- Supported Modbus RTU function codes
- Description of the Modbus RTU status words