Pelco C636M-F manual Connecting A Relay Unit

CONNECTING A RELAY UNIT

To connect a CM9760-REL to a DX9100 recorder using RS-232 communication:

1.Connect a null modem cable from the relay unit’s RS-232 port to the recorder’s RS-232 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.

RECORDER

	1	4	9	12	5	8	13	16
Term		75	Term	75	Term	75	Term	75
Loop		HI-Z	Loop	HI-Z	Loop	HI-Z	Loop	HI-Z
								Rel	Alarm Inputs	Rel		Alarm Inputs
In
Out	1	2	3	4	5	6	7	8
								1	1 2 3 4 5 6 7 8	Com 2	9 10 11 12 13 14 15 16 Com
In
Out	9	10	11	12	13	14	15	16		AUDIO INPUTS
									1	5	9	13
									2	6	10	14
									3	7	11	15
				OR					4	8	12	16

RS-232 TO RS-422

CONVERTER

NULL MODEM CABLE

CM9760-REL

Figure 77. Connecting a CM9760-REL

64 C636M-F (3/09)