Mitsubishi A2CCPU User Manual

9. TROUBLESHOOTING /MELSEC-A
9.2 Troubleshooting
This section explains the procedure for determining the cause of
problems and the errors and corrective actions for error codes.
9.2.1 Troubleshooting flow charts
Details for fault finding may be found as follows.
Occurrence of error
1
Is 'POWER"
To Section 9.2.2 "Flow chart used when 'POWER" LED
LED
off?
has turned off"
-
Is 'RUN"
has turned
off"
LED off?
To Section 9.2.3 "Flow chart used when "RUN" LED
Is 'RUN" LED
-
To Section 9.2.4 "Flow chart used when "RUN" LED
flickering?
flickers"
-
1
I
Is "ERROR"
To Section 9.2.5 "Flow chart used when "ERROR" LED
.
LED on?
has turned on"
J
Is "ERROR" LED
To Section 9.2.6 "Flow chart used when "ERROR" LED
flickering?
flickers"
-
+
"RD/SD" LED is not on during To Section 9.2.7 "Flow chart used when "RD/SD" LEDs
data communication.
do not flicker"
I
I d
UO module
does not operate
properly.
To Section 9.2.8 "Flow chart used when output load of
output module does not turn on"
I
Program cannot To Section 9.2.9 "Flow chart used when program
be written. cannot be written"
I
I I I I
3
1
4
I
J
3
1
9
3
-4
I
I
J
3
J
9-2
IB iNAJ 6623sA

Mitsubishi A2CCPU Specifications

General

Brand	Mitsubishi
Model	A2CCPU
Category	Controller
Language	English