Allen-Bradley Rockwell Automation 857 User Manual page 236

9-8
Connections
857-UM001A-EN-P – July 2009
Table 9.2 – 32 mm-high Modules (cont.)
Communication
Type
ports
REMOTE or
LOCAL selectable
with a dip switch.
REMOTE or
LOCAL selectable
with a dip switch.
REMOTE or
LOCAL selectable
with a dip switch.
Table 9.3 – 50 mm-high Modules
Communication
Type
ports
61850 REMOTE
EXTENSION
Signal levels Connector
Light, switch ST connector
for echo/ no-
echo and light/
no-light
selection
Light, switch Snap-in & ST
connectors
for echo/ no-
echo and light/
no-light
selection
Light, switch ST & Snap-in
for echo/ no- connectors
echo and light/
no-light
selection
Signal levels Connector
Ethernet RJ-45 connector
8
1
RS-232 6-pin connector
Pin usage
Pin usage
1=Transmit+
2=Transmit –
3=Receive+
4=Reserved
5=Reserved
6=Receive-
RJ-45
7=Reserved
8=Reserved
1=SYNC, IN
2=GND
3=EXT RX
4=GND
5=EXT TX
6=GND