Rockwell Automation 1763 MicroLogix 1100 Programmable Controllers User Manual - Manual (Page 81)

Publication 1763-UM001D-EN-P - March 2011
Communication Connections 79
MicroLogix 1100 Channel 0 to Modem Cable Pinout
When connecting MicroLogix 1100 Channel 0 to a modem using an RS-232
cable, the maximum that the cable length may be extended is 15.24 m (50 ft).
ATTENTION
Do not connect pin 1,8, and 5. This connection will
cause damage to the RS-232/485 communication port
(channel 0) of the MicroLogix 1100 and/or the
controller itself.
DTE Device
(MicroLogix
1100
Channel 0) DCE Device
(Modem,
PanelView,
etc.)
8-Pin 25-Pin 9-Pin
7 TXD TXD 2 3
4 RXD RXD 3 2
2 GND GND 7 5
1 B(+) DCD 8 1
8 A(-) DTR 20 4
5 N.C. DSR 6 6
6 CTS CTS 5 8
3 RTS RTS 4 7