About The Fiber Module - Allen-Bradley ControlNet 1786-RPFM Installation Instructions Manual

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ControlNet Modular Repeater Medium-distance Fiber Module

About The Fiber Module

Use this module when a medium-distance (distances of 3000m/9843ft)
fiber link is required between two ControlNet products. This fiber link
provides ground isolation between nodes and is less susceptible to noisy
environments than traditional cooper media.
Note: The distance that can be supported is dependent on the quality of
the fiber, number of splices, and connectors. The total loss of the
fiber link must be less than 13.3 dB. Typical systems of greater
than 3000m are possible.
The module provides:
two fiber channels
activity LED indicators for each fiber channel
The figure below identifies the components of the module:
Indicators
Protective caps
Channel 1 fiber port
Module locking tab
The left side of the module (not shown here) also contains a backplane connector.
1786-5.11 — February 1998
Channel 2 fiber port
Right–side
backplane connector with
protective cover
30042–M