16 REMOTE OPERATION
16.1 Remote RUN/STOP
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16
16 REMOTE OPERATION
The operating status of the CPU module can be changed using an engineering tool or program, or dedicated instructions from
the module.
The following types of remote operation are available:
• Remote RUN/STOP
• Remote PAUSE
• Remote RESET
16.1 Remote RUN/STOP
This function externally changes the CPU module status to RUN or STOP with the RUN/STOP/RESET switch of the CPU
module set to RUN. This function is useful to RUN or STOP a CPU module located in an unaccessible place, or to RUN or
STOP a CPU module located on the control panel by using an external signal.
Executing method
The following methods are available to execute remote RUN/STOP:
Using a contact
Set RUN contact in the RUN-PAUSE contact setting. ( Page 222 Setting RUN-PAUSE Contacts)
When the END processing for the scan where the RUN contact is turned on is executed, SM203 (STOP contact) turns on to
change the CPU module status to STOP and stop the operation. When the RUN contact is turned off, the CPU module exits
the STOP state and resumes the program operation from the step 0.
In redundant mode, when the backup mode setting is enabled in the CPU parameter, both systems may be
recognized as being mismatched in the system consistency check even if the remote operation is
simultaneously performed on the systems. This is because an operating status mismatch occurs depending
on the timing.
(1) When the RUN contact is turned off, the CPU
module status changes to RUN and the program
is resumed from the step 0.
(2) SM203 turns on when the END processing for the
scan where the set RUN contact is turned on is
executed.
(3) When the RUN contact is turned on, the CPU
module executes the operation until the END
instruction and enters the STOP state.
(1)
0 0
ON
OFF
ON
OFF
SM203
END
RUN
(2)
(3)
STOP RUN
END
Setup RUN contact
RUN/STOP state
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