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INTERBUS
Fieldbus Dependent I/O Module
INTERBUS
7 INTERBUS
7.1 Overview
INTERBUS is standardized in the EN 50 254 as a fieldbus. Its architecture is
that of a data ring with a central bus master and bus slaves.
The INTERBUS differentiates among several sub-variants, two fieldbus vari-
ants of which should be mentioned for the decentralized periphery:
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Remote bus
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Installation remote bus
7.1.1 Features of the Remote Bus
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1 master, max. 512 slaves
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Ring structure with active slave coupling
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max. bus segment length 400 m
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max. extension
12.8 km (certified copper cable) RS 485 with a 9 pole D-Sub plug con-
nector
100 km (optical fibre cables)
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Transmission rate 500 kBaud
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With each new start, the master produces an updated list of the slaves con-
nected