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7 REMOTE OPERATION
7.2 Remote PAUSE
Precautions
This section describes the precautions on using remote RUN/STOP.
• When remote RUN is performed during execution of the data logging function, it may fail. In that case, wait for a while and
retry remote RUN. If remote RUN still cannot be executed, check whether remote RUN is acceptable and retry remote RUN
( Page 216 About remote operation)
• When the RUN contact, which is specified in the RUN-PAUSE contact setting, is turned off during execution of the data
logging function, it may take time to return to the RUN state.
7.2 Remote PAUSE
This function externally changes the CPU module status to PAUSE with the RUN/STOP/RESET switch of the CPU module set
to RUN. Use this in a process control and other situations to keep the CPU module status in RUN even when changing the
status of the output (Y) to STOP.
Executing method
The following methods are available to execute remote PAUSE:
Using a contact
Set PAUSE contact in "RUN-PAUSE Contact Setting". ( Page 143 Setting RUN-PAUSE Contacts) When the END
processing for the scan where the PAUSE contact is turned on is executed, SM204 (PAUSE contact) turns on. When the CPU
module executes until the END instruction for the scan next to that where the PAUSE contact is turned on, its status changes
to PAUSE, and the operation stops. When the PAUSE contact is turned off, the CPU module exits the PAUSE status and
resumes the program operation from the step 0.
Using an engineering tool
Perform remote PAUSE with the remote operation of the engineering tool. ( GX Works3 Operating Manual)
By an external device using SLMP
Perform remote PAUSE with the SLMP command. ( SLMP Reference Manual)
(1) When the PAUSE contact is turned off, the CPU
module exits the PAUSE state and resumes the
program operation from the step 0.
(2) SM204 turns on when the END processing for the
scan where the set PAUSE contact is turned on is
executed.
(3) When the CPU module executes until the END
instruction for the scan next to that where the
PAUSE contact is turned on, its status changes to
PAUSE, and the operation stops.
ON
(1)
OFF
SM204
ON
OFF
0 END
0
END
RUNPAUSERUN
(3)
(2)
0 END
0
END
Setup PAUSE contact
RUN/PAUSE state
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