Modbus RTU configuration for Enterprise IIoT Gateway

Hello!

I want to query data from a device that has Modbus RTU with the Enterprise IIoT Gateway, what is the configuration that the Gateway needs to query data with Modbus RTU?

Also, what is the device in the modbus node configuration in Node-RED?

In case you need it, here is the system data:
Firmware Version: 2.2.0 (68cabd42)
Hardware Version: 1.1