
35-1
35.1 Introduction
is chapter describes the foundation eldbus (FF) protocol, proposed by the Fieldbus Foundation
organization
and
standardized
as
IEC
norm
[IEC00a,IEC00b,VP02,PF03,PN09].
is
protocol,
which
has
a
strong
inuence
from
the
World
FIP
protocol
and
is
mainly
used
in
process
automation
applica-
tions
[BE01],
has
as
its
main
characteristic
a
full
distribution
of
control
functions,
which
can
run
on
processing
units
embedded
on
sensors
and
actuators.
In
the
open,
nonproprietary
Foundation
archi-
tecture,
each
eld
device
has
its
own
“intelligence”
and
communicates
via
an
all-digital,
serial,
two-way
communications
system.
For
t