The communication between the merging unit and PCM600 is independent of the used communication protocol within the substation or to the NCC. It can be seen as a second channel for communication.
The media is always Ethernet and communication is based on TCP/IP.
Each merging unit has an Ethernet front connector for PCM600 access. Depending on the station concept and the used station protocol, additional Ethernet interfaces may be available on the rear side of the merging unit. All Ethernet interfaces can be used to connect PCM600.
When an Ethernet based station protocol is used, the PCM600 communication can use the same Ethernet port and IP address. The merging unit is able to separate the information belonging to the PCM600 dialog.
To configure the physical connection and the IP addresses: