Pinouts >  RS-232 and other serial ports and interfaces
9 pin D-SUB female connector layout
9 pin D-SUB female connector
Pin Signal Description
1   Shield
2 RTS+ Request To Send +
3 RTS- Request To Send -
4 TXD+ Transmit Data +
5 TXD- Transmit Data -
6 CTS+ Clear To Send +
7 CTS- Clear To Send -
8 RXD+ Received Data +
9 RXD- Received Data
According to 9 reports in our database (2 positive and 7 negative) the RS-422 (9 pin) pinout may be incorrect.

Is this pinout
RS-422 (9 pin) visual pinout:click to enlarge
Copyright © 2000-2021 by pinouts.ru team, except user uploaded images.
No portion of this webpage may be reproduced in any form without visible link to Pinouts.ru .
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.