Df1 isolated modem connection – Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers User Manual
Page 69
Connecting the System
3–11
DF1 Isolated Modem Connection
24V dc
(Not needed in this configuration
since the MicroLogix 1000 provides
power to the AIC+ via port 2.)
User supplied modem cable
MicroLogix 1000
Modem
1761-CBL-AM00
or
1761-CBL-HM02
Selection Switch Up
AIC+
(1761-NET-AIC)
For additional information on connections using the AIC+, see the Advanced
Interface Converter (AIC+) and DeviceNet Interface (DNI) Installation Instructions,
Publication 1761-5.11.
Constructing Your Own Modem Cable
If you construct your own modem cable, the maximum cable length is 15.24 m (50
ft) with a 25-pin or 9-pin connector. Refer to the following typical pinout:
25-Pin
9-Pin
2
5
1
4
6
8
7
3
RTS
TXD
RXD
GND
CD
DTR
DSR
CTS
RXD
3
7
8
20
6
5
4
GND
CD
DTR
DSR
CTS
RTS
TXD
2
Modem
Optical Isolator
2
5
1
4
6
8
7
3
9-Pin
AIC+
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