Mitsubishi Electric Melsec A Series - Page 170

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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