Pelco FR106011 manual RS-485, RS-232, RS-422, Wire, Bi-Phase, Balanced, Unbalanced

Table D. Data Connector Pin Assignments

Pin			RS-485	RS-485
Number	RS-232	RS-422	2-Wire	4-Wire	Manchester	Bi-Phase
1		TX+ (Out+)	T+/R+ (Out+/In+)	TX+ (Out+)	TX+ (Out+) (W)	TX+ (Out+)
2		TX-(Out-)	T-/R-(Out-/In-)	TX- (Out-)	TX- (Out-) (B)	TX- (Out-)
3	—	RX+ (In+)	—	RX+ (In+)	RX+ (In+) (W)	RX+ (In+)
4	—	RX- (In-)	—	RX- (In-)	RX- (In-) (B)	RX- (In-)
5	RX (In)	—	—	—	—	—
6	TX (Out)	—	—	—	—	—
7 or 8	Ground	—*	—*	—*	Shield	Shield

*Ground may be required based on conditions of installation. Refer to the current version of EIA/TIA-422

and EIA/TIA-485 standards for additional information.
NOTES:
•	TX (Out), TX+ (Out+), TX- (Out-), T+ (Out+), and T- (Out-) denote data output from the transmitter/
	receiver.
•	RX (In), RX+ (In+), RX- (In-), R+ (In+), and R- (In-) denote data input to the transmitter/receiver.
•	W denotes white wire, and B denotes black wire.
•	Data ports are not terminated. For RS-422, RS-485 2-Wire, RS-485 4-Wire, Manchester, and
	Bi-Phase data signals, termination may be required based on conditions of installation. If
	termination is required, terminate the data signal at the endpoint of the data bus using a 120-ohm
	resistor.
		Table E. Audio Connector Pin Assignments
		Pin Number	Balanced	Unbalanced
		1	In, Left+	—
		2	In, Right+	—
		3	In, Left-	—
		4	In, Right-	—
		5	—	In, Left
		6	—	In, Right
		7 or 8	—	Shield
		9	Out, Left+	Out, Left
		10	Out, Right+	Out, Right
		11	Out, Left-	—
		12	Out, Right-	—

20 C2649M (9/07)