Communication Interfaces And Protocols - ABB Relion SMU615 Technical Manual

Section 10
Merging unit's physical connections
10.4.3
236
handles the Ethernet traffic between a merging unit and a station bus. In this case, the
used network can be a ring or daisy-chain type of network topology. In loop type
topology, a self-healing Ethernet loop is closed by a managed switch supporting rapid
spanning tree protocol. In daisy-chain type of topology, the network is bus type and it
is either without switches, where the station bus starts from the station client, or with
a switch to connect some devices and the merging units of this product series to the
same network.Internal Ethernet switch MAC table size is 512 entries. All Ethernet
ports share this one common MAC table.
Communication modules including Ethernet connectors X1, X2, and X3 can utilize
the third port for connecting any other device to a station bus.
The merging unit's default IP address through rear Ethernet port is 192.168.2.10 with
the TCP/IP protocol. The data transfer rate is 10 or 100 Mbps full duplex.

Communication interfaces and protocols

The communication protocols supported depend on the optional rear communication
module.
Table 287: Supported station communication interfaces and protocols
Interfaces/Protocols
IEC 61850-8-1
IEC 61850-9-2 LE
● = Supported
Ethernet
100BASE-TX RJ-45
●
●
1MRS758407 B
100BASE-FX LC
●
●
SMU615
Technical Manual