Rockwell Automation Allen-Bradley ControlNet 1786 Series, Installation Instructions Manual

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Publication CNET-IN002A-EN-P - December 2001
1-4 Overview of The ControlNet Coax Media System
Trunk Cable
The trunk cable is the bus, or central part of the ControlNet
Coax media system. The trunk cable is composed of multiple sections
of cable. The standard cable that can be used to construct trunk-cable
sections is quad shield RG-6 type Coax.
There are also several types of special-use cables you can use
depending on the environment in which you are installing your cable
system.
Cable Connectors
A cable connector (cat. no. 1786-BNC) attaches Coax trunk-cable
sections to the tap’s BNC connector.
Optional Connectors
Allen-Bradley also offers optional cable connectors for use in your
network configuration.
Terminators
A 75-
Ω
terminator (cat. no. 1786-XT) must be installed on the tap at
each end of a segment.
N N
N N
40957
trunk-cable
T T
T T
N
N N
N
40958
trunk-cable