If you are not familiar with installing the DeviceMaster UP, you can use the Modbus Router Installation Overview, which will guide you through the following:
Hardware installation
Program the IP address
Upload the latest Modbus Router firmware
After installation, you can use the Modbus Router documentation to configure the ports.
There are three unique applications that support Modbus gateways. If you are unsure of which version you should implement, see the Modbus Family page.