Rockwell Automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Packaged Controllers Quick Start and User Manual - Manual (Page 174)

174 Publication IASIMP-QS010B-EN-P - October 2009
Chapter 2 Network Communication
If you are configuring a 1769-L23-QBFC1B controller, click the system
protocol tab that corresponds to the serial port you configured in
step 2
(for example, CH0-System Protocol).
6. From the Protocol pull-down menu, choose ASCII.
7. Specify ASCII settings according to your system.
ASCII Instructions
The controller supports several instructions to manipulate ASCII characters.
The instructions are available in ladder diagram (LD) and structured text (ST).
1769-L23E
1769-L23