Installing A Dh-485 Network - Rockwell Automation Allen-Bradley DriveLogix 5730 User Manual

9-6 Communicating with Devices on a DH485 Link

Installing a DH-485 Network

Important: Use shielded, twisted-pair cable - either Belden 3106A or Belden 9842. A
A DH-485 network consists of a number of cable segments daisy-chained
together. The total length of the cable segments cannot exceed 1219 m
(4000 ft).
daisy-chained network is recommended. Star connections are not recommended
When cutting cable segments, make them long enough to route them from
one link coupler to the next with sufficient slack to prevent strain on the
connector. Allow enough extra cable to prevent chafing and kinking in the
cable.
Figure 9.1 Single Cable Connection
Belden 3106A or 9842 Cable
(3106A Shown)
Orange Wire
with White Stripe
Shrink Tubing
(OR/WH)
(Recommended)
White Wire
with Orange Stripe
(WH/OR)
Blue Wire
(BU)
Drain Wire
(Shield)
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