Page 6-1

Manual MPCICOM422-4.E1b
Chapter 6: Connector Pin Assignments
The popular 9-pin D subminiature connector is used for interfacing to communication lines. The
connector is equipped with 4-40 threaded standoffs (female screw lock) to provide strain relief.
Pin No. RS422 Signals
1Rx-
2Tx+
3Tx-
4
5GND Ground
6
7
8
9Rx+
Table 6-1: Connector Pin Assignments