Mitsubishi Electric Melsec A Series - Troubleshooting Flow Charts

9. TROUBLESHOOTING
MELSEC-A
I
9.2
9.2.1
Troubleshooting
This section explains the procedure for determining the cause of problems
and the errors and corrective actions for error codes.
Troubleshooting flow charts
Details for fault finding may be found as follows.
Occurrence of error
)
To Section 9.2.2 "Flow chart used when "POWER-
Is "POWER"LEDoff?
LED has turned off"
To
Section 9.2.3 "Flow chart used when "RUN" LEO
Is "RUN" LEDoff?
has turned off
To
Section 9.2.4 "Flow chart used when "RUN- LEO
Is "RUN" LEDflickering?
fllckere'
To Section 9.2.5 "Flow chart used when "ERROR"
Is "ERROR" LEDon?
LED has turned on"
To Section 9.2.6 "Flow chart used when "ERROR"
Is "ERROR" LED flickering?
LED flickers'
"RD/SO" LEDis not on during
To Section 9.2.7 "Flow chart used when "RD/SO"
data communication.
LEOs do not flicker"
110 module does not operate
To Section 9.2.8 "Flow chart used when output load
properly.
of output module does not turn on"
Program cannot be written.
I
To Section 9.2.9 "Flow chart used when program can-
I
not be written"
9-2