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Abstract(s)
For industrial environments it is true that Ethernet
technologies are there to stay. In fact, a number of
characteristics are boosting the eagerness of extending
Ethernet to also cover factory-floor applications. Fullduplex
links, non-blocking and priority-based switching,
bandwidth availability, just to mention a few, are
characteristics upon which that eagerness is building up.
But, will Ethernet technologies really manage to
replace traditional field bus networks?
Fieldbus fundamentalists often argue that the two
things are not comparable. In fact, Ethernet technology,
by itself, does not include features above the lower layers
of the OSI communication model. Where are the higher
layers and the application enablers that permit building
real industrial applications? And, taking for free that they
are available, what is the impact of those protocols,
mechanisms and application models on the overall
performance of Ethernet-based distributed factory-floor
applications?
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Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto