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

6 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 copper media.
IMPORTANT
The module provides:
• two fiber channels
• activity LED indicators for each fiber channel
Figure 1 Components of the Module
Indicators
Protective caps
Channel 1 fiber port
Publication 1786-IN011B-EN-P - October 2000
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.
Module locking tab
The left side of the modules (not shown here) also contains a backplane connector
Channel 2 fiber port
Right-side
backplane
connector with
protective cover
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