Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 40)

Publication 1794-UM001G-EN-P - January 2007
40 Communicate over Networks
On the DH-485 network, the FlexLogix controller can send and
receive messages to and from other controllers on the network.
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 two controllers for each 1761-NET-AIC converter,
but you need a different cable for each controller.
a. Connect the serial port of the controller to either port 1 or
port 2 of the 1761-NET-AIC converter.
b. 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.
IMPORTANT
A DH-485 network consists of multiple cable segments. Limit
the total length of all the segments to 1219m (4000 ft.).
If you connect to this port: Use this 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