Publication 1762-UM001D-EN-P - March 2004
Communication Connections 4-7
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 for constructing a straight-through cable:
Constructing Your Own Null Modem Cable
If you construct your own null 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:
DTE Device
(AIC+,
MicroLogix,
SLC, PLC, etc.)
DCE Device
(Modem,
PanelView,
etc.)
9-Pin 25-Pin 9-Pin
3 TXD TXD 2 3
2 RXD RXD 3 2
5GND GND7 5
1 DCD DCD 8 1
4DTR DTR204
6 DSR DSR 6 6
8 CTS CTS 5 8
7 RTS RTS 4 7
DTE Device
(AIC+,
MicroLogix,
SLC, PLC, etc.)
DCE Device
(Modem,
PanelView, etc.)
9-Pin 25-Pin 9-Pin
3TXD TXD 2 3
2 RXD RXD 3 2
5GND GND 7 5
1 DCD DCD 8 1
4DTR DTR 20 4
6 DSR DSR 6 6
8 CTS CTS 5 8
7 RTS RTS 4 7
To Next Page
Loading...
