Publication 1763-UM001E-EN-P - June 2015
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).
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
2GND GND7 5
1B(+) DCD8 1
8A(-) DTR204
5N.C. DSR6 6
6 CTS CTS 5 8
3 RTS RTS 4 7
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