Flow For Actions When The Program Cannot Be Written - Mitsubishi A1SJH(S8) User Manual

11. TROUBLESHOOTING

11.2.8 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.
Program cannot be written
to the programmable
controller CPU
Is the RUN/STOP
keyswitch set
to STOP?
Is the memory protect
switch OFF?
Is a ROM
memory cassette
used?
Counstult your nearest
Mitsubishi representative.
RUN
STOP
NO
ON
OFF
NO
YES
NO
NO
2
*
When using the E PROM memory cassette, confirm that the memory protect setting pin is at
"OFF" on the A2SNMCA-30KE modules.
Set the RUN/STOP
keyswitch to STOP
Can the program
be written?
NO
Replace the programmable
controller CPU.
Can the program
be written?
Switch OFF the memory
protect.(M.PRO OFF)
Can the
program be
written?
2
Replace the E PROM
memory cassette or use a
built-in RAM
Can the
program be
written?
11 - 9
YES
YES
YES
*
YES
Complete