B&B Electronics 3PXCC4A Communication Cable Data, RS-422/RS-485 Four Wire Pinout Description

3PXCC4A Serial Card		RS-422 Four Wire Device
	TD(B+) Pin 1		RD(+)
	TD(A-) Pin 2		RD(-)
	RD(B+) Pin 3		TD(+)
	RD(A-) Pin 4		TD(-)
	GND Pin 8		GND

Figure 5. RS-422/RS-485 (Four Wire) Pinout Description

3PXCC4A Serial Card

TD(A-) Pin 2

TD(B+) Pin 1

RD(A-) Pin 4

RD(B+) Pin 3

GND Pin 8

RS-485 Two Wire Device

DATA (-)

DATA (+)

GND

Figure 6. RS-485 (Two Wire) Pinout Description

Communication Cable Data

The 3PXCC4A Serial Card communicates using RS-232,

RS-422, and RS-485 communications. The communication cable specifications are 24AWG (wire gauge) and 30pF/ft. (capacitance rating). Twisted pairs are ideal for the RS-422/RS-485 Cable in order to suppress noise on the data line. B&B Electronics can provide this communication cable for RS-232 or RS-422/RS-485 Applications. The Model ETC8195 is a cable style that can be used for RS-232 Applications, and Model ETC8506 can be used for RS-422/RS-485 Applications.

Manual Document# 3PXCC4A3001 41

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445