Flowchart For When Program Is Rewritten Unintentionally - Mitsubishi Q01CPU User Manual

12
TROUBLESHOOTING

12.2.17 Flowchart for when program is rewritten unintentionally

The following shows the flowchart for when the program is unintentionally rewritten at
power-on or reset of the programmable controller.
12
- 22 12.2 Troubleshooting
12.2.17 Flowchart for when program is rewritten unintentionally
Program is rewritten unintentionally.
Is SM660 ON?
ON (During boot operation)
After formatting the program memory
that is performing boot operation
from the standard ROM, write data to
the standard ROM.
Invalidate the "Perform boot from
standard ROM" check box in the
boot file setting of the PLC
parameter dialog box.
Write the parameters and
sequence program to the program
memory.
Power on the programmable
controller/perform reset operation.
Is the program rewritten?
NO
Completed
Diagram 12.14 Flowchart for when program is rewritten unintentionally
OFF (Program memory execution)
YES
Hardware fault
Please consult your local nearest
Mitsubishi or representative,
explaining a detailed description of
the problem.