Rockwell Automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Packaged Controllers Quick Start and User Manual - Manual (Page 186)

186 Publication IASIMP-QS010B-EN-P - October 2009
Chapter 2 Network Communication
4. If you are configuring a 1769-L23E serial port, click the Serial Port tab.
If you are configuring a 1769-L23-QBFC1B controller, click the serial
port tab for the port you want to configure (for example, CH0-Serial
Port).
5. From the Mode pull-down menu, choose System.
6. Specify communication settings according to your system.
7. If you are configuring a 1769-L23E serial port, click the System
Protocol tab.
1769-L23E
1769-L23
IMPORTANT
The baud rate specifies the communication rate for the
DH-485 port. All devices on the same DH-485 network
must be configured for the same baud rate. Select 9600 or
19200 KB.