<s>
Ethernet	O
Advanced	B-Protocol
Physical	I-Protocol
Layer	I-Protocol
(	O
Ethernet-APL	O
)	O
describes	O
a	O
physical	O
layer	O
for	O
the	O
Ethernet	O
communication	O
technology	O
which	O
is	O
especially	O
developed	O
for	O
the	O
requirements	O
of	O
the	O
process	O
industries	O
.	O
</s>
<s>
Ethernet	O
has	O
long	O
become	O
the	O
standard	O
communication	O
solution	O
in	O
the	O
information	O
technology	O
field	O
,	O
while	O
Industrial	B-Protocol
Ethernet	I-Protocol
is	O
the	O
common	O
description	O
of	O
the	O
variant	O
of	O
this	O
standard	O
for	O
the	O
manufacturing	O
and	O
process	O
industries	O
.	O
</s>
<s>
Ethernet-APL	O
provides	O
the	O
missing	O
link	O
,	O
extending	O
unified	O
Ethernet	O
communication	O
all	O
the	O
way	O
down	O
to	O
field	O
instrumentation	B-Application
.	O
</s>
<s>
It	O
supports	O
all	O
major	O
network	B-Architecture
topologies	I-Architecture
including	O
the	O
well	O
known	O
trunk	O
&	O
spur	O
topology	B-Architecture
which	O
is	O
widely	O
utilized	O
in	O
process	O
industries	O
.	O
</s>
