Understand Constraints Of The Coax Segment - Allen-Bradley ControlNet 1786-RPCD Installation Instructions Manual

Redundant Topology
Use redundant media when you need module and media redundancy. With redundant media,
the channel-to-channel skew travel time difference must be less than 1.6µs.
TIP
For more information on redundant topology, refer to the ControlNet Fiber Media Planning
and Installation Guide, publication CNET-IN001.
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1786-RPA
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CH B

Understand Constraints of the Coax Segment

The total allowable length of a segment containing standard RG-6 quad shield coaxial cable
depends upon the number of taps in your segment. There is no minimum trunk-cable section
length requirement.
The maximum allowable total length of a segment is 1,000m (3,280ft) with two taps
connected. Each additional tap decreases the maximum length of the segment by 16.3m
(53ft). The maximum number of taps allowed on a segment is 48 with a maximum length of
250m (820ft).
Redundant media can be used with series and star topologies. You
cannot use redundant media with ring redundant topology.
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ControlNet Dual Copper Repeater Module
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Publication 1786-IN001B-EN-P - May 2004
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1794-ACNR15
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