Publication 1762-UM001D-EN-P - March 2004
4-10 Communication Connections
The shield reduces the effect of electrostatic noise from the industrial
environment on network communication.
The communication cable consists of a number of cable segments
daisy-chained together. The total length of the cable segments cannot
exceed 1219 m (4000 ft). However, two segments can be used to
extend the DH-485 network to 2438 m (8000 ft). For additional
information on connections using the AIC+, refer to the Advanced
Interface Converter (AIC+) User Manual, publication 1761-6.4.
When cutting cable segments, make them long enough to route them
from one AIC+ to the next, with sufficient slack to prevent strain on
the connector. Allow enough extra cable to prevent chafing and
kinking in the cable.
Use these instructions for wiring the Belden #3106A or #9842 cable.
(See Cable Selection Guide on page 4-14 if you are using standard
Allen-Bradley cables.)
Connecting the Communication Cable to the DH-485 Connector
Single Cable Connection
When connecting a single cable to the DH-485 connector, use the
following diagram.
TIP
A daisy-chained network is recommended. Do not
make the incorrect connection shown below:
Belden #3106A
or #9842
Belden #3106A or
#9842
Belden #3106A or
#9842
Connector
Connector
Connector
Incorrect
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