Rockwell Automation 1756-L6x_L7x ControlLogix System User Manual - Manual (Page 46)

46 Rockwell Automation Publication 1756-UM001O-EN-P - October 2014
Chapter 3 Start Using the Controller
1756-L6x Connection Options
Connection options with the 1756-L6 x include the following:
• Connect by using a serial cable as described in Connect to the
1756-L6x Controller on page 49 .
• Install and configure a communication module in the chassis with the
controller as described in the installation instructions for the
communication module.
Connect to the
1756-L7x Controller The controller has a USB port that uses a Type B receptacle. The port is USB 2.0
compatible and runs at 12 Mbps.
To use the USB port of the controller, you must have RSLinx software,
version 2.56 or later, installed on your workstation. Use a USB cable to connect
your workstation to the USB port. With this connection, you can upgrade
firmware and download programs to the controller directly from your
workstation.
TIP When upgrading your 1756-L6x controller firmware, we recommend you use a
network connection other than the serial cable. Serial connections are much
slower than other communication connections.
ATTENTION: The USB port is intended only for temporary local
programming purposes and not intended for permanent connection. The
USB cable is not to exceed 3.0 m (9.84 ft) and must not contain hubs.
WARNING: Do not use the USB port in hazardous locations.