Rockwell Automation 1769-ASCII Compact Module - Manual (Page 13)

Compact 1769-ASCII Module 13
Publication 1769-IN068B-EN-P - May 2005
Connect the D-sub Connector Pins
All pins are active at all times.
IMPORTANT
Pins unused for a particular physical network must not be
connected via the serial cable to any other device. In
particular, do not use cables 1747-CP3 and 1756-CP3.
Pin RS-232 RS-422 RS-485
1 Do Not Connect Transmit Data - Transmit/Receive Data -
2 Receive Data Do Not Connect Do Not Connect
3 Transmit Data Do Not Connect Do Not Connect
4 Do Not Connect Receive Data - Do Not Connect
5 Common Common Common
6 Do Not Connect Receive Data + Do Not Connect
7 Request To Send Request To Send Request To Send
8 Clear To Send Clear To Send Clear To Send
9 Do Not Connect Transmit Data + Transmit/Receive Data +