4.A2CCPU
--------------------
MELSEC·A
4.2.3
Running and stopping the A2C from external devices (Remote RUN/STOP function)
The
RUN switch is used
for
A2CCPU
run/stop
control.
The
operation I
"remote RUN/STOP" means controlling A2CCPU
run/stop
with external sig-
nals (peripheral devices, remote RUN contact) with
the
RUN switch placed
in
the
RUN position.
(1) Application of remote RUN/STOP
Remote RUN/STOP control is possible in
the
following cases.
(a) The A2CCPU is out of reach.
(b) The A2CCPU is located in a control box.
(2) Operation
Execution of sequence program operation is controlled as indicated •
below in response to
the
remote RUN/STOP operation.
(a) Remote
stop
The A2CCPU
stops
after
the
sequence program is executed to
the
END (FEND) instruction.
(b) Remote RUN
The sequence program is executed again from
step
0 by
the
remote
RUN operation after the A2CCPU has been
stopped
by
the
remote
..
STOP operation.
..
(3) Executing remote RUN/STOP
Remote
RUN/STOP
operation
is
possible
through
the
following
methods:
(a) Remote RUN contacts
Remote RUN/STOP control is possible by
turning
on
and
off
the
remote RUN contacts which are set with parameters.
1) When remote RUN contacts are turned ON.
the
A2C is set to
the
RUN state.
4-24
•
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