78520 Network Interface to 78520 Network
Interface
Note: One end only of the screen is connected to earth, the other is not
connected (N/C).
Note: If a cable is a twin twisted pair, make sure when connecting the
equipment that one pair is used for -VE and +VE and the other is used
for the OV (only one core connected to the OV, the other is not
connected.)
SIDE 1 SIDE 2
Network interface
Network interface
-VE +VE 0V -VE +VE 0V
NC
SCREEN
-VE +VE 0V -VE +VE 0V
SIDE 1 SIDE 2
NC
SCREEN
NC
SCREEN
ROM PREVIOUS
NETWORK
INTERFACE
0V
+VE
-VE
0V
+VE
-VE
RS485
(see Cables part)
P4 P5
P4 P5
NETWORK INTERFACE
NETWORK INTERFACE
gsmfl5
Figure 21-2 Network Interface to Network Interface
78520 Network Interface to 78520 Network Interface
Network Wiring
Senator II Installation Manual
21-2
78910-03NM Issue 1_12/95