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Flow Chart Used When "run" Led Of The A2ccpu Has Turned Off - Mitsubishi Electric MELSEC-A Series User Manual

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9. TROUBLESHOOTING
9.2.3
Flow chart used when "RUN" LED of the A2CCPU has turned off
MELSEC-A
I
"RUN" LED has turned off.
Is the ERUN key switch
NO
Move the RUN key switch to RUN.
set at
RUN?
I
YES
Is an error
YES
Take corrective action according to the error
indicated on the peripheral?
code list.
NO
"RUN" LED
I
turns on.
(1 ) Due to failure of PC parts of bad contact.
"RESET" CPU
I
(2) Due to excessive noise.
"RUN" LED remains off.
In eese of (1)
In case of (2)
After resetting with the RUN key switch of the
CPU module, move the switch to STOP.
Consult the sales representative with details.
Write END to address 0 with the peripheral
device.
"RUN" LED does not turns
Move the RUN keyswiteh to RUN.
I
"RUN" LED turns on.
Softwear error.
Check program with programmer and correct
Connect noise suppression circuit, such as
the program.
CR,
to noise source.
9-4

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