Omron SYSMAC C Series

This
ladder
diagram
shows
part
of
the
circuit
used
for
this
control
system.
Processing stage
(C500 program)
0002
0001 Shortage
t Stops the
T
tH +-—(on) Stops the coating
stage
assembling stage
[Assembling stag
(C20 program)
0001
0
G 4
Detects screw E
i
oo Shortage
Stops the
$ assembling
stage
0000
1 *2
Channels as viewed
from
500
Channels
of
YO
link
unit
connected to C20
Input:
channel 01
Coating stage
(C20 program)
i
Detects dirty ink
0100
Stops the
4 coating stage
0000
*2
Channels as viewed
from C500
Channels of I/O link unit
connected to C20
Output:
channel 06
*1.
When
the
screw
supply
is
depleted
during
the
assembling
step,
output
relay
0600
of
the
I/O
link
unit
is
turned
ON.
Viewed
from
the
C500,
this
output
relay
is
input
relay
2900
of
the
C500,
which
is
connected
to
the
remote
I/O
master
unit.
(Since
the
I/O
link
unit
is
using
channels
28
and
29,
the
I/O
link
unit
must
be
set
as
channel
28
with
its
DIP
switch.)
Therefore,
the
signal
indicating
the
screw
shortage
that
is
output
from
relay
0600
of
the
I/O
link
unit
is
input
to
relay
2900
in
the
processing
stage.
In
response,
relay
0102
on
the
central
control
panel
is
turned
ON,
issuing
the
alarm
signal.
$2;
By
connecting
the
RUN
output
of
the
I/O
link
unit
to
input
relay
0000
of
the
C20
in
the
coating
stage,
the
other
two
stages
(processing
and
assembling)
can
be
stopped
in
case
a
failure
occurs
in
the
I/O
link
unit
in
the
coating
stage.
A-13