
32 Publication IASIMP-QS010B-EN-P - October 2009
Chapter 2 Prepare the Computer, Network, and Controller
Serial connection - Required for option 2
If you are using an 1769-L23E packaged controller, you may choose to upgrade your controller firmware by
using your Ethernet connection instead. If you use the Ethernet connection, you do not have to make this
serial connection.
Verify that you connected a 1756-CP3 cable to a COM port on the computer and to the CH0 port on the
controller as described in Chapter 1.
1756-CP3 serial cable to CH0 of an 1769-L23 controller.
This connection will be used to update the controller firmware later in this chapter.
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