Mitsubishi QJ71GP21-SX, Reference Manual

Page: 339 / 650

9
DEDICATED INSTRUCTIONS
9.5 JP/GP.WRITE
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(c) Checking the execution status of the WRITE instruction
The execution status of the WRITE instruction (Executing, Normal completion,
Error completion) can be checked with the following devices specified in the
setting data.
1) Completion device (D2)
Turns ON in the END processing for the scan after completion of the WRITE
instruction, and turns OFF in the next END processing.
2) Completion status indication device ((D2)+1)
Turns ON or OFF depending on the completion status of the WRITE
instruction.
• When completed normally
It remains OFF.
• When failed
It turns ON in the END processing for the scan after completion of the
WRITE instruction, and turns OFF in the next END processing.
(d) Operation in WRITE instruction execution
Figure 9.32 Operation in WRITE instruction execution (own station)
Program of own station
Completion device of
own station (D2)
Completion status indication
device ((D2)+1)
WRITE instruction
WRITE instruction execution Writing to the device specified
by WRITE completed
Start contact
OFF
ON
ON
ON
END processing END processing END processing END processing
OFF
OFF
When failed
Normal completion
1 scan