14 CompactLogix Controllers
Publication
1768-IN004D-EN-P - December 2009
Connect to the Controller
Connect the 1756-CP3 serial cable to the controller’s serial port and to
your workstation.
If you make your own cable, follow these guidelines.
• Wire the connectors as
shown.
• Limit the cable length
to 15.2 m (50 ft).
• Attach the shield to
both connectors.
Configure a Communication Driver
Before you update controller firmware or use the controller in your
network, you must configure a communication driver specific to your
network.
See Configure a Serial Driver
on page 15 or Configure an EtherNet/IP
Driver on page 17.
WARNING
If you connect or disconnect the serial cable with power applied to this module
or the serial device on the other end of the cable, an electrical arc can occur. This
could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
Workstation Controller
1 DCD
2 RDX
3 TXD
4 DTR
COMMON
6 DSR
7 RTS
8 CTS
9
1 DCD
2 RDX
3 TXD
4 DTR
COMMON
6 DSR
7 RTS
8 CTS
9
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