Panasonic WJ-FS616C manual Connections for RS-485 type camera

■Connections for RS-485 type camera

There are two options to connect the camera with the multiplexer, depending on the distance between them. For data multiplexed type cameras, a maximum dis- tance of 900 meters (3 000 ft) is the limit for using coax- ial cable such as RG-59/U, BELDEN 9259 or equivalent. If more distance is required, use cameras and multi- plexer with RS-485 communication feature. This will lower signal loss and extend the distance as video sig- nal and data are transmitted separately.

Note that you need to set up the communication port as described on page 42 when using the RS-485 feature. Note: Recommended for RS-485 communication is

shielded, two-wire, twisted pair, low impedance cable, AWG#22 or thicker.

(1)Connect with a RS-485 camera in “Home Run” wiring as shown below, then set the LINE SELECT switch to “2” or “4”.

WV-RM70 and others

	ON		OFF	TERM
		DATA
T(A)	T(B)		R(A) R(B)
			GND
							LINE
	RS485				TERM.	SELECT
				OFF	ON	2	4
A	B	G	A B	G
T		N	R	N		WJ-FS616C
		D		D

(A)	OFF ON
(B)
GND

WV-CPR450 and others (For the Termination Switch positions, refer to the instruction manual for the camera.)

						LINE
	RS485			TERM.	SELECT
			OFF	ON	2	4
A B	G A	B	G
T	N	R	N		WJ-FS616C
	D		D

(2) Connect cameras in a Daisy Chain

1.Draw up a plan for connection between the cameras and the input channels of the video multiplexer, and the assignment of unit addresses to cameras.

Cautions:

Check the settings of the camera addresses when using cameras capable of RS-485 communication. Operations from the multiplexer will not work if the cam- era addresses are set improperly.

•Do not use addresses other than 1 through 16 for individual cameras (“17” is not allowed).

•Do not set a single address for more than one cam- era in an RS-485 chain.

2.Set the LINE SELECT switch of the multiplexer to “2”. Also set the switch of the connected equipment if required.

3.Connect one end of the cable as shown to the RS-485 terminal of the multiplexer, and the other end to the first camera in the chain. Repeat this procedure for all cam- eras to the end of the chain.

4.Set the termination switches of the multiplexer and cam- eras at both ends of the chain to ON position. Termination switches of cameras not at the chain ends must be in OFF position.

Cautions:

•Termination is the key to data transmission and reception in the chain. Only the switches at the chain ends must be set to ON, while the other switches are set to OFF.

•Response may slow gradually the higher the equip- ment number in the chain.

The switch on a daisy-
chain-connected unit not				The switch on the end
at the extremities must				unit should be in the
be in the OFF position.				ON position.
	(A)	OFF	ON		(A)	OFF	ON
	(B)				(B)
	GND				GND

WV-CPR450 and others (For the Termination Switch positions, refer to the instruction manual for the corresponding unit.)

						LINE
	RS485			TERM.	SELECT
			OFF	ON	2	4	Set it to
							position 2
A B	G A	B	G
T	N	R	N		WJ-FS616C
	D		D

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