<s>
The	O
SECS/GEM	B-Algorithm
is	O
the	O
semiconductor	O
's	O
equipment	O
interface	O
protocol	O
for	O
equipment-to-host	O
data	O
communications	O
.	O
</s>
<s>
In	O
an	O
automated	O
fab	B-Algorithm
,	O
the	O
interface	O
can	O
start	O
and	O
stop	O
equipment	O
processing	O
,	O
collect	O
measurement	O
data	O
,	O
change	O
variables	O
and	O
select	O
recipes	O
for	O
products	O
.	O
</s>
<s>
The	O
SECS	O
(	O
SEMI	O
Equipment	O
Communications	O
Standard	O
)	O
/GEM	O
(	O
Generic	B-Algorithm
Equipment	I-Algorithm
Model	I-Algorithm
)	O
standards	O
do	O
all	O
this	O
in	O
a	O
defined	O
way	O
.	O
</s>
<s>
Generally	O
speaking	O
,	O
the	O
SECS/GEM	B-Algorithm
standard	O
defines	O
messages	O
,	O
state	O
machines	O
and	O
scenarios	O
to	O
enable	O
factory	O
software	O
to	O
control	O
and	O
monitor	O
manufacturing	O
equipment	O
.	O
</s>
<s>
The	O
GEM	O
standard	O
is	O
formally	O
designated	O
and	O
referred	O
to	O
as	O
SEMI	O
standard	O
E30	O
,	O
but	O
frequently	O
simply	O
referred	O
to	O
as	O
the	O
GEM	O
or	O
SECS/GEM	B-Algorithm
standard	O
.	O
</s>
<s>
Many	O
equipment	O
in	O
semiconductor	O
(	O
front	O
end	O
and	O
back	O
end	O
)	O
,	O
surface	O
mount	O
technology	O
,	O
electronics	O
assembly	O
,	O
photovoltaic	O
,	O
flat	O
panel	O
display	O
and	O
other	O
manufacturing	O
industries	O
worldwide	O
provide	O
a	O
SECS/GEM	B-Algorithm
interface	O
on	O
the	O
manufacturing	O
equipment	O
so	O
that	O
the	O
factory	O
host	O
software	O
can	O
communicate	O
with	O
the	O
machine	O
for	O
monitoring	O
and/or	O
controlling	O
purposes	O
.	O
</s>
<s>
GEM	O
equipment	O
can	O
communicate	O
with	O
a	O
GEM	O
capable	O
host	O
using	O
either	O
TCP/IP	O
(	O
using	O
the	O
HSMS	B-Algorithm
standard	O
,	O
SEMI	O
E37	O
)	O
or	O
RS-232	O
based	O
protocol	O
(	O
using	O
the	O
SECS-I	O
standard	O
,	O
SEMI	O
E4	O
)	O
.	O
</s>
<s>
The	O
SECS/GEM	B-Algorithm
standard	O
and	O
the	O
additional	O
GEM300	O
standards	O
are	O
required	O
on	O
nearly	O
each	O
and	O
every	O
300mm	O
wafer	O
manufacturing	O
tool	O
in	O
order	O
to	O
implement	O
the	O
manufacturing	O
automation	O
.	O
</s>
<s>
In	O
2008	O
,	O
the	O
Photovoltaic	O
industry	O
officially	O
decided	O
to	O
adopt	O
the	O
SECS/GEM	B-Algorithm
standard	O
and	O
submitted	O
a	O
proposal	O
for	O
a	O
new	O
SEMI	O
standard	O
,	O
ballot	O
4557	O
,	O
as	O
a	O
new	O
PV	O
industry	O
standard	O
.	O
</s>
<s>
The	O
new	O
standard	O
is	O
called	O
the	O
PV02	O
"	O
Guide	O
for	O
PV	O
Equipment	O
Communication	O
Interfaces	O
(	O
PVECI	O
)	O
"	O
and	O
defines	O
a	O
framework	O
that	O
utilizes	O
the	O
SEMI	O
E37	O
(	O
HSMS	B-Algorithm
)	O
,	O
SEMI	O
E5	O
(	O
SECS-II	O
)	O
,	O
as	O
well	O
as	O
sub-sets	O
of	O
SEMI	O
E30	O
(	O
GEM	O
)	O
,	O
SEMI	O
E148	O
(	O
NTP	O
based	O
time	O
synchronization	O
)	O
and	O
SEMI	O
E10	O
(	O
Definition	O
and	O
Measurement	O
of	O
Equipment	O
Reliability	O
and	O
Availability	O
)	O
standards	O
.	O
</s>
