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ARCNET
The ARCNET system (Attached Resource Computer Network)
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ARCNET is a system for data transmission in local networks.
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The ARCNET protocol is based on the Token Passing principle.
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By passing an identifier (token) from station to station it is guaranteed, that only one station can start
a data transmission (transmission without collision).
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The order of sequence, in which the stations are accessed, is automatically adapted by the existing
conditions in the network, i.e. that the network is reconfigured automatically each time a station is
added to the network or switched off.
ARCNET bus topology
The networking possibilities of Linear ARCNET
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The Linear ARCNET connects the individual stations directly to each other, i.e. without using any
distribution units.
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Each station is connected to the network by using a T connector.
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Both cable ends must be terminated by termination resistors.
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A maximum of 8 stations can be connected to one Linear ARCNET.
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The maximum cable length of the network is 300 m.
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An additional segment can be connected at the end of the wired segment via an Active Hub (active
distribution unit), see next but one drawing.
Total length max. 300 m
Figure: Linear ARCNET
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V2
AC500 Hardware
Station 1
T-connector
Terminating resistor 93 Ohms
Station 2
1-51
System data
Station 3
AC500 / Issued: 05.2007
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