Rockwell Automation 1769-L23E-QB1B_L23E-QBFC1B_L23-QBFC1B CompactLogix Packaged Controllers Quick Start and User Manual - Manual (Page 185)

Publication IASIMP-QS010B-EN-P - October 2009 185
Network Communication Chapter 2
On the DH-485 network, the CompactLogix controller can send and receive
messages to and from other controllers.
For the controller to operate on a DH-485 network, you need a
1761-NET-AIC interface converter for each controller you want to put on the
DH-485 network.
You can have one packaged controller for each 1761-NET-AIC converter.
Configuration for a DH-485 Network
To establish DH-485 communication, complete this procedure.
1. Connect the serial port of the controller to either port 1 or port 2 of the
1761-NET-AIC converter.
2. Use the RS-485 port to connect the converter to the DH-485 network.
The cable you use to connect the controller depends on the port you use
on the 1761-NET-AIC converter.
3. In RSLogix 5000, open the Controller Properties dialog box by
right-clicking the packaged controller and choosing Properties.
IMPORTANT
A DH-485 network consists of multiple cable segments. Limit
the total length of all the segments to 1219 m (4000 ft).
Connection Required Cable
Port 1
DB-9 RS-232, DTE connection
1747-CP3
or
1761-CBL-AC00
Port 2
mini-DIN 8 RS-232 connection
1761-CBL-AP00
or
1761-CBL-PM02