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C634M-D (12/04) 75
CONNECTING A RELAY UNIT
To connect a CM9760-REL to a DX9200 recorder using RS-232 communication:
1. Connect a null modem cable from the relay unit’s RS-232 port to the recorder’s COM 1 or COM 2 port.
2. Set the DIP switches on the relay unit for RS-232 communication. Refer to the CM9760-REL Installation/Operation
manual.
If using RS-422 communication:
1. Connect a cable from the relay unit’s RJ-45 COM IN port to the recorder’s RS-232 port via an RS-232 to
RS-422 converter.
2. Set the DIP switches on the relay unit for RS-422 communication. Refer to the CM9760-REL Installation/Operation
manual.
Figure 98. Connecting a CM9760-REL
RECORDER
CM9760-REL
RS-232 TO RS-422
CONVERTER
NULL MODEM CABLE
COM 1
COM 2