Mitsubishi Electric Q02HCPU-A - 11.2.9 Flow for actions when the program cannot be written

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11. TROUBLESHOOTING
11.2.9 Flow for actions when the program cannot be written
The flowchart when the program and other data cannot be written to the CPU module is
described.
NO
YES
YES
NO YES
NO
ON
OFF
NO YES
The program cannot
be written.
Is the RUN/
STOP switch of the
CPU module at
STOP?
Is an invalid
memory card
being used?
Describe the problem to
the nearest service center,
retail store, or corporate
office, and obtain advice.
Set the RUN/STOP switch
to STOP.
Can the program
be written?
Reset the CPU module.
Can the program
be written?
Can the
program
be written?
Complete
Replace it with an
available memory card
(Q2MEM-1MBSN,
Q2MEM-1MBS).
Or, use built-in RAM instead
of installing a memory card.