Allen-Bradley 1738-ADNX Manuale Utente Pagina 41

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Publication 1768-UM001C-EN-P - November 2007
Communicate over Networks 41
CompactLogix DH-485 Network Communication Overview
You can have two controllers for each 1761-NET-AIC converter, but you need
a separate cable for each controller. Connect the serial port of the controller to
either port 1 or port 2 of the 1761-NET-AIC converter. Use the RS-485 port
to connect the converter to the DH-485 network.
IMPORTANT
A DH-485 network consists of multiple cable segments. Limit
the total length of all the segments to 1219 m (4000 ft).
Cable Selection
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
Connection from CompactLogix
Controller to Port 1 or Port 2
CompactLogix Controller
SLC 5/03 Controller
1761-NET-AIC+
Converter
1747-AIC Programmable
Controller Isolated Link
Coupler
DH-485 Network
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