RS422 “4 wire serial” connector v1¶

RS422 uses standard RJ-45 ethernet connector. Pin order is selected so that cross over ethernet cable can be used.

../../../_images/ethernet-cable1.png — RS422 uses RJ-45 and ethernet cable.¶

Only pins 1,2,3 and 6 are needed.

Connector pinout¶
pin nr	color	name	description
1	green/white	TX+	Transmit data +.
2	green	TX-	Transmit data -.
3	orange/white	RX+	Receive data +.
6	orange	RX-	Receive data -.

../../../_images/rj45-breakout-board.jpeg — RJ-45 breakout board can be used with bread board.¶

1.8.2021/pekka