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MELSEC-Q
14 DEDICATED INSTRUCTIONS
[Functions]
(1) This dedicated instruction is used to return the setting data set in the QD75 buffer
memory and flash ROM to their factory-set data (initial values).
Initialized setting data
Parameters (
Pr.1
to
Pr.57
,
Pr.150
)
Positioning data (No. 1 to No. 600)
Block start data (No. 7000 to 7004)
(2) The PINIT instruction completion can be confirmed using the complete devices
((D)+0) and ((D)+1).
(a) Complete device ((D)+0)
This device is turned ON by the END processing of the scan for which PINIT
instruction is completed, and turned OFF by the next END processing.
(b) Complete state display device ((D)+1)
This device is turned ON and OFF according to the state in which PINIT
instruction is completed.
• When completed normally : Kept unchanged at OFF.
• When completed abnormally : This device is turned ON by the END
processing of the scan for which PINIT
instruction is completed, and turned OFF by
the next END processing. (same ON/OFF
operation as complete device).
END
processing
END
processing
END
processing
END
processing
OFF
OFF
OFF
ON
ON
ON
When
completed
abnormally
When
completed normally
1 scan
PINIT instruction
execution completion
Sequence program
PINIT instruction
Complete device
Complete state display
device
[Errors]
(1) When a dedicated instruction is completed abnormally, the error complete signal
((D)+1) is turned ON, and the error code is stored in the complete status ((S)+1).
Check and take measures against the error referring to Section 15.2 "List of error
codes".
[Precautions]
(1) The PINIT instruction can only be executed when the QD75 READY signal (X0) is
turned OFF.
When the QD75 READY signal is turned ON, the PINIT instruction cannot be
executed.
Before executing the PINIT instruction, turn OFF the PLC READY signal (Y0) and
then turn OFF the QD75 READY signal.
(2) When the remote I/O station
(Q Corresponding MELSECNET/H network remote
I/O module) is used, the dedicated instruction (PINIT) is unusable.
: For details of the remote I/O station, refer to Q Corresponding MELSECNET/H
Network System Reference Manual (Remote I/O Network).