Selection between the RS422 and RS485 interfaces
When the interface is selected on the instrument, the display shows “r422” for MODbus, and “ProF” for Profibus-DP.
Because of the display representation limitations, the display has been restricted to “r422” for the MODbus interfaces. However, configuration under this parameter also includes the RS485 interface. From the connections to the terminals, the instrument hardware can detect whether the RS422 or RS485 is being operated.