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.


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 -.

RJ-45 breakout board can be used with bread board.