Configured in master Uni-Telway mode (default function), the terminal port makes it possible to manage man-machine interface device.

The man-machine interface device uses UNI-TE protocol to communicate with the local PLC and the other stations on the network architecture.

When using a Premium PLC, the man-machine interface terminal should be connected to the AUX connector in order to free the TER connector for possible connection of a programming/adjustment terminal.