Technical description
8 Connections
8.3 Serial communication connection
VM259.EN007
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259
8.3.1.
Pin assignments of communication options
The communication module types and their pin assignments
are introduced in the following table.
Optional inbuilt Ethernet / 61850 interfaces
(for software version 10.0 onwards):
Type
Communication
ports
Signal
levels
Connector
Pin usage
Ethernet
TCP port
Ethernet
RJ-45 connector
1=T
2=Transmit –
3=
4=Reserved
5=Reserved
6=Receive-
7=Reserved
8=Reserved
Ethernet
TCP port
Fiber
ethernet
ST connectors
18 mm high modules:
Type
Communication
ports
Signal
levels
Connector
Pin usage
VCM 232
REMOTE,
LOCAL and
EXTENSION
RS-232
RJ-45 connector
1= LOC TX
2= EXT TX
3= +8V
4= GND
5= REM TX
6= REM RX
7= LOC RX
8= EXT RX
VCM 485-2 REMOTE,
LOCAL or
EXTENSION
port selectable
with a dip
switch
RS-485
(2-wire
connection)
3-pole screw
connector
1= -
2= +
3= GND