Message formats appendix a – Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual User Manual
Page 165
Message Formats
Appendix A
AĆ3
Figure A.1
Cabling for a RS-232-C Line Monitor
1
2
3
4
5
6
7
8
20
25
25 Pin, Female
RS-232-C Connector
25 Pin, Male
RS-232-C Connector
25 Pin, Male
RS-232-C Connector
of 1775-KA
1775-KA
Toggle Switch
Connections
Channel B
Industrial Terminal
(Cat. No. 1770-T4)
To RS-232-C Device
2 = Transmit Data
3 = Receive Data
7 = Ground
18 = Received Data Return
25 = Transmitted Data Return
= Connect these lines according
to the specifications for your
modem or RS-232-C device.
3
7
18
25
10069-I
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