Rockwell Automation 1756-L6x_L7x ControlLogix System User Manual - Manual (Page 49)

Rockwell Automation Publication 1756-UM001O-EN-P - October 2014 49
Start Using the Controller Chapter 3
Connect to the
1756-L6x Controller The 1756-L6 x ControlLogix controller uses a serial port for workstation
connections.
To connect a workstation to the serial port, you can make your own serial cable or
use one of these cables:
• 1756-CP3 serial cable
• 1747-CP3 cable from the SLC™ product family (if you use this cable, it can
be difficult to close the controller door)
Follow these guidelines if you make your own serial cable:
• Limit the length to 15.2 m (50 ft).
• Wire the connectors as shown.
• Attach the shield to the connectors.
Plug the controller end of the serial cable into the RS-232 port on the front of the
controller.
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.
To Workstation
To Controller
2 RDX
3 TXD
4 DTR
COMMON
6 DSR
7 RTS
8 CTS
9
1 CD
2 RDX
3 TXD
4 DTR
COMMON
6 DSR
7 RTS
8 CTS
9
1 CD
To Workstation To Controller