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9.
TROUBLESHOOTING
- - - - - - - - - - - - - - - - - - - - MELSEC-A
9.2.9
Malfunction In program download to PC
Program cannot be written to PC.
I
RUN
Switch to "STOP".
Can program be written?
~---
---
YES
NO
"RESET" CPU.
NO
YES
Can program be written?
ON
Switch off memory protect. (M.PRO off)
OFF
NO
YES
Can program be written?
RAM
Consult the sales representative
wlth-
details.
ROM
Switch
it
to RAM.
NO
Can program be written?
9-11
YES
Completed

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