Rockwell Automation 2755-G6-D Scanner with RS-232 Option - Manual (Page 89)

A–B
D Appendix
D–1
Interface Cable Pinouts
The Catalog No. 2755-NCR1 Cable is typically used
to connect the scanner to IBM PC Compatible
computers. You may have to use an adapter if your
computer has a 9-pin port.
T a b le D.1
RS232 DCE, 25-Pin, Female, D-Type Connector
Catalog No. 2755-NCR1
Pin Signal Name Function
2 RxD Serial data receive input.
3 TxD Serial data transmit output.
4 CTS Clear-To-Send (or External Trigger)
Handshaking input line. 1
5 RTS Request-To-Send
Handshaking output line.
7 Ground Ground pin and reference for both output signals.
External trigger operation is controlled by applying an external signal to the
CTS input (with external triggering enabled). CTS protocol and External Trigger
Enabled are mutually exclusive parameters. See Chapter 5 for details on how
to enable the scanner for external trigger operation.
1