Ethernet Rj-45 Front Connection; Ethernet Rear Connections - ABB RELION SMU615 Technical Manual

Merging unit's physical connections
10.4.1

Ethernet RJ-45 front connection

The merging unit is provided with an RJ-45 connector on the LHMI. The connector is
intended for configuration and setting purposes. The interface on the PC side has to
be configured in a way that it obtains the IP address automatically. There is a DHCP
server inside merging unit for the front interface only.
The events and setting values and all input data such as memorized values and
disturbance records can be read via the front communication port.
Only one of the possible clients can be used for parametrization at a time.
• PCM600
• WHMI
The default IP address of the merging unit through this port is 192.168.0.254.
The front port supports TCP/IP protocol. A standard Ethernet CAT 5 crossover cable
is used with the front port.
10.4.2

Ethernet rear connections

The Ethernet station bus communication module is provided with either galvanic
RJ-45 connection or optical multimode LC type connection, depending on the
product variant and the selected communication interface option. A shielded
twisted-pair cable CAT 5e is used with the RJ-45 connector and an optical multi-
mode cable (≤2 km) with the LC type connector.
In addition, communication modules with multiple Ethernet connectors enable the
forwarding of Ethernet traffic. These variants include an internal Ethernet switch
that 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.
252
Always install dust caps on unplugged fiber connectors.
If contaminated, clean optical connectors only with fiber-optic cleaning
products.
The speed of the front connector interface is limited to 10 Mbps.
1MRS758407 C
SMU615
Technical Manual