Overview Of The Controlnet Cable System; Contents; Understanding The Controlnet Cable System - Allen-Bradley ControlNet 1786-6.2.1 Planning And Installation Manual

Contents

Understanding The ControlNet
Cable System
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network
Term Means
network a collection of connected nodes —
the connection paths between any pair of devices
may include repeaters and bridges
link a collection of nodes with unique addresses
in the range of 1-99
segment trunk-cable sections connected via taps with
terminators at each end and with no repeaters
trunk cable the bus or central part of a cable system
trunk-cable a length of a cable between any two taps
section
Overview Of The ControlNet
Cable System
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segment
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trunk-cable
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Term
repeater
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tapr
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bridge
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node
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terminator
link
segment
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R
N
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N
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link (one segment)
Means
a two-port active physical layer component that
reconstructs and retransmits all traffic it hears on one
segment side to another segment side
the connection between any device and the ControlNet
cable system
a device that allows traffic to pass from one link to another
link
any physical device connecting to the ControlNet cable
system which requires a network address in order to
function on the network — a link may contain a maximum
of 99 nodes
this address must be in the range of 1 - 99 and be
unique to that link
a 75Ω resistor mounted in a BNC plug

Chapter
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40952
Publication 1786-6.2.1 - April 1998