Mitsubishi 00JCPU, Руководство пользователя

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6.6.2 Remote PAUSE
(1) Definition
This operation changes the operating status of the CPU module externally to PAUSE, keeping the RUN/STOP
switch of the CPU module (the RUN/STOP/RESET switch for the Basic model QCPU) in the RUN position.
PAUSE status is a status where sequence program operations in the CPU module are stopped, holding the status
(on or off) of all outputs (Y).
(2) Application
This operation is useful, especially during the process control, to hold the on status of outputs (Y) even after the
operating status of the CPU module is switched from RUN to STOP.
(3) Executing method
There are two methods for performing the remote PAUSE operation.
• Using a PAUSE contact
• By GX Developer or an external device using the MC protocol
(a) Using a PAUSE contact
Set a PAUSE contact in the PLC system tab of the PLC parameter dialog box.
The settable device range differs depending on the CPU module.
• Basic model QCPU: Input X0 to X7FF
• High Performance model QCPU, Process CPU, or Redundant CPU: Input X0 to X1FFF
1) The PAUSE contact (SM204) turns on during END processing of the scan where both the PAUSE contact
and PAUSE enable coil (SM206) turn on.
The CPU module executes one more scan until the END instruction after the scan where the PAUSE
contact turns on, and then changes its operating status to PAUSE. In the PAUSE status, the program
operations are stopped.
2) When the PAUSE contact or SM206 is turned off, the PAUSE status will be canceled and the CPU module
will restart the sequence program operation from the step 0.
Figure 6.16 Remote PAUSE using a PAUSE contact
OFF
ON
0 END
PAUSE status
0
END
0
0
END END
SM206
OFF
ON
SM204
OFF
ON
RUN/PAUSE
status RUN RUN
PAUSE
PAUSE
contact
Turns on when the
PAUSE conditions
are established