Omron SYSMAC C Series User Manual

Introduction
to
the
C20
About the SYSMAC-C20
C20 Components
CPU
Programming device
This
device
is
used
to
enter
the
control
plan
into
the
CPU's
memory.
An
operator
keys
in
the
instructions
used
to
sequentially
contro!
the
application
process.
There
are
several
programming
methods;
in
the
case
of
the
SYSMAC
C-Series,
relay
ladder
diagram
prog
ramming
is
used
because
plant
personnel
are
familiar
with
that
format
and
it
provides
for
convenient
record-keeping.
The
C20
comes
in
two
versions,
a
basic
unit
and
an
expandable
unit.
The
capabilities
of
the
basic
unit
include
up
to
1194
program
statements,
28
I/O
points,
and
136
internai
auxiliary
relays.
The
expandable
unit
is
functionally
identicai
to
the
basic
unit
except
that
it
can
be
expanded
using
expansion
/O
units
to
include
up
to
140
I/O
points.
The
C20
offers
the
flexibility
of
either
RAM-
or
EPROM-based
operation.
When
a
RAM
chip
is
installed
as
the
memory,
programs
written
by
the
user
can
be
modified
and
rewritten.
EPROM
provides
a
semi-permanent
storage
for
completed
programs.
The
programming
console
can
be
detached
and
is
upwardly
compatible
with
the
full
line
of
SYSMAC
C-Series
programmabie
controllers.
Due
to
its
compact
design,
the
C20
incorporates
the
detachable
I/O
terminals
and
microprocessor
functions
in
a
single
housing
called
the
CPU.
The
detachable
programming
console
functions
as
the
program-
ming
device.
Additionally,
various
optional
peripheral
devices
are
available
to
support
system
expansion.
The
two
main
components
are
explained
and
illustrated
in
the
next
several
pages.
Central processing unit
The
CPU
is
the
main
enclosure
of
the
C20
incorporating
the
micro-
processor
and
I/O
terminals.
The
controlling
program
written
using
a
programming
device
is
stored
and
executed
in
the
CPU.

Omron SYSMAC C Series Specifications

General

Brand	Omron
Model	SYSMAC C Series
Category	Controller
Language	English