Rockwell Automation 2755-G6-D Scanner with RS-232 Option - Manual (Page 90)

Interface Cable Pinouts
Appendix D
D–2
The Catalog No. 2755-NCR2 cable is compatible
with the AUX port on the Single and Dual-Head
Enhanced Bar Code Decoders (Catalog No.
2755-DS1A, -DD1A).
T a b le D.2
RS232 DTE, 25-Pin, Male, D-Type Connector
Catalog No. 2755-NCR2
Pin Signal Name Function
2 TxD Serial data transmit output.
3 RxD Serial data receive input.
4
RTS
Request-To-Send
Handshaking output line
5
CTS
Clear-To-Send (or External Trigger)
Handshaking input line 1
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 Trig-
ger Enabled are mutually exclusive parameters. See Chapter 5 for details on
how to enable the scanner for external trigger operation.
1