Pelco FR85011A manual RS-485 2-Wire Half Duplex Data Communication Wiring

DEVICE A

R+/T+

R-/T-

		FR85011A
RS-485	RECEIVER –
	DATA CONNECTOR
2-WIRE
			1	T+/R+	(DATA OUT+/DATA IN+)	RS-485 2-WIRE
			2	T-/R-	(DATA OUT-/DATA IN-)	DATA SELECTION
			3			1 2		3	4
			4
						0			5
			5
						9	8	7	6
			6
			7
			8
			GND

RS-485 2-WIRE DATA CONNECTIONS BETWEEN DEVICE A AND FR85011A RECEIVER

			FT85011A
DEVICE B	RS-485	TRANSMITTER –
		DATA CONNECTOR
	2-WIRE
R+/T+						1	T+/R+	(DATA OUT+/DATA IN+)	RS-485 2-WIRE
R-/T-					2		T-/R-	(DATA OUT-/DATA IN-)	DATA SELECTION
					3				1 2		3	4
					4
									0			5
				5
									9	8	7	6
					6

7

8 GND

RS-485 2-WIRE DATA CONNECTIONS BETWEEN DEVICE B AND FT85011A TRANSMITTER

Figure 9. RS-485 2-Wire (Half Duplex) Data Communication Wiring

20 C2604M (7/06)