Connect The D-Sub Connector Pins - Allen-Bradley 1769-ASCII Installation Instructions Manual

Connect the D-sub Connector Pins

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