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Pelco Manual C538M-A (3/04)
3.2.2 External Relay Wiring Considerations
Components of external relay wiring are illustrated in Figure 4.
3.2.3
Communication Connectors
Communication to and from the unit is provided through two RJ-45 ports on the
rear of the CM9760-REL. The ports are physically referenced as IN and OUT ports.
rear of the CM9760-REL. The ports are physically referenced as IN and OUT ports.
The RJ-45 IN connector allows the REL unit to be connected to an appropriate
Sercom port on the rear of a CM9760-CC1 controller. This port is factory set for
RS-422 communications.
Sercom port on the rear of a CM9760-CC1 controller. This port is factory set for
RS-422 communications.
The RJ-45 OUT female connector on the rear of the unit is always configured for
RS-422 and is used for cascading subsequent REL units.
RS-422 and is used for cascading subsequent REL units.
The RJ-45 connector pin-outs are illustrated in Figure 5.
3.2.3.1 DB-9 Connector
The rear panel DB-9 connector (factory use only).
Figure 4. External Relay Wiring
32
°
-122
°
F (0
°
-50
°
C)
+
–