<s>
PROFIenergy	B-Protocol
is	O
a	O
profile	O
of	O
the	O
PROFINET	B-Protocol
communications	O
protocol	O
that	O
allows	O
the	O
power	O
consumption	O
of	O
automation	O
equipment	O
in	O
manufacturing	O
(	O
such	O
as	O
robot	B-Algorithm
assembly	O
cells	O
,	O
laser	O
cutters	O
and	O
sub-systems	O
such	O
as	O
paint	O
lines	O
)	O
to	O
be	O
managed	O
over	O
a	O
PROFINET	B-Protocol
network	O
.	O
</s>
<s>
The	O
technology	O
standard	O
is	O
managed	O
by	O
the	O
industry	O
association	O
Profibus	O
and	O
Profinet	B-Protocol
International	O
.	O
</s>
<s>
PROFIenergy	B-Protocol
relies	O
on	O
three	O
production	O
elements	O
working	O
together	O
:	O
the	O
controlling	O
device	O
in	O
an	O
automation	O
network	O
(	O
usually	O
a	O
PLC	O
,	O
but	O
it	O
could	O
be	O
a	O
supervisory	O
system	O
or	O
dedicated	O
energy	O
management	O
controller	O
on	O
the	O
same	O
network	O
)	O
,	O
the	O
communications	O
network	O
(	O
PROFINET	B-Protocol
)	O
,	O
and	O
the	O
power	O
consuming	O
unit	O
(	O
which	O
could	O
be	O
a	O
single	O
device	O
or	O
item	O
of	O
equipment	O
,	O
a	O
cell	O
or	O
even	O
a	O
larger	O
sub-system	O
)	O
.	O
</s>
<s>
The	O
PROFIenergy	B-Protocol
switching	O
mechanisms	O
reside	O
inside	O
energy	O
consumers	O
.	O
</s>
<s>
The	O
controlling	O
device	O
transmits	O
signals	O
via	O
PROFINET	B-Protocol
to	O
say	O
when	O
production	O
pauses	O
will	O
happen	O
.	O
</s>
<s>
Equipment	O
vendors	O
implement	O
an	O
energy	O
management	O
strategy	O
by	O
embedding	O
a	O
software	O
‘	O
agent’	O
in	O
the	O
equipment	O
firmware	B-Application
.	O
</s>
<s>
This	O
responds	O
to	O
the	O
PROFIenergy	B-Protocol
commands	O
in	O
ways	O
that	O
suit	O
the	O
equipment	O
.	O
</s>
<s>
For	O
example	O
,	O
a	O
production	O
cell	O
may	O
need	O
a	O
conveyor	O
to	O
be	O
slowed	O
down	O
before	O
a	O
robot	B-Algorithm
can	O
be	O
put	O
into	O
‘	O
sleep’	O
mode	O
.	O
</s>
<s>
PROFIenergy	B-Protocol
can	O
transmit	O
power	O
demand	O
information	O
back	O
to	O
the	O
controller	O
to	O
support	O
more	O
sophisticated	O
energy	O
savings	O
schemes	O
,	O
including	O
peak	O
load	O
management	O
.	O
</s>
<s>
PROFINET	B-Protocol
uses	O
the	O
acyclic	O
slots	O
of	O
the	O
PROFINET	B-Protocol
communications	O
protocol	O
and	O
does	O
not	O
interfere	O
with	O
co-existing	O
automation	O
processes	O
.	O
</s>
