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12
TROUBLESHOOTING
12.3 Error Code List
12 - 20
9
EMC AND LOW
VOLTAGE
DIRECTIVES
10
LOADING AND
INSTALLATION
11
MAINTENANCE AND
INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
12.3 Error Code List
If an error occurs under one of the following conditions, the QS series CPU module uses
the self-diagnostic function to display error information (LED indication) and stores it in the
special relay (SM) and special register (SD):
• the programmable controller is powered on
• the programmable controller is reset
• the programmable controller is switched from STOP to RUN
• the programmable controller is running
If an error occurs when a communication request is issued from GX Developer, intelligent
function module or network system to the CPU module, the CPU module returns the error
code (4000
H
to 4FFF
H
) to the request source.
The following describes the description of errors which occur in the CPU module and the
corrective actions for the errors.
(1) How to read the error code list
The following describes how to read Section 12.3.3 Error code list (1000 to 1999) to
Section 12.3.8 Error code list (8000 to 9000).
(a) Error code, common information and individual information
Alphanumeric characters in the parentheses of the titles indicate the special
register numbers where each information is stored.
(b) Compatible CPU
QS: Compatible with the QSCPU.