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Omron SYSMAC C Series User Manual

Omron SYSMAC C Series
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System
expansion
and
peripherals
Expansion
1/0
unit
Type
3G2C7-MC223/227
Type
3G2C7-MC224/228
ARM
EL
Le
om
Le
The
basic
C20
comes
with
28
I/O
points
when
the
DC
input
type
CPU
is
used.
The
number
of
I/O
points
available
from
the
AC
input
type
CPU
is
26.
If
your
controlled
system
so
requires,
you
can
increase
the
number
of
I/O
points
of
an
expandable
C20
by
connecting
either
one
or
two
expansion
DC
input
type
I/O
units
to
the
DC
input
type
CPU
for
a
maximum
of
140
I/O
points.
The
maximum
number
of
I/O
points
is
130
when
the
system
is
configured
of
AC
input
type
units.
The
expansion
I/O
unit
can
be
classified
by
two
factors:
the
input
type
{DC
or
AC)
and
the
number
of
I/O
points.
The
DC
input
type
comes
with
28
or
56
I/O
points,
whereas
the
AC
input
type
offers
26
to
52
I/O
points.
Explanation
When
an
expansion
|/O
unit
is
connected
to
the
CPU,
the
input/output
channels
of
the
expansion
!/O
unit
and
the
CPU
are
automatically
designated.
Since
the
CPU’s
input
channel
is
fixed
to
channel
00
and
its
output
channel
is
fixed
to
channel
05,
the
new
input
and
output
channels
provided
by
the
expansion
I/O
unit
are
numbered
beginning
from
the
channel
next
to
the
CPU's
input/output
channel.
That
is,
when
a
28-
or
26-point
expansion
|/O
unit
(with
one
input
and
one
output
channel)
is
connected
to
the
CPU,
the
new
input
channel
is
assigned
as
channel
01
and
the
new
output
channel
is
assigned
as
channel
06.
Likewise,
if
a
56-
or
52-point
expansion
I/O
unit
(with
two
input
and
two
output
channels)
is
connected,
the
new
input
channels
are
assigned
as
channels
01
and
02
and
the
new
output
channels
are
assigned
as
channels
06
and
07.
in
addition
to
the
load
power
supply,
a
separate
power
supply
is
required
to
drive
the
C20's
output
relays.

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Omron SYSMAC C Series Specifications

General IconGeneral
BrandOmron
ModelSYSMAC C Series
CategoryController
LanguageEnglish

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