9 - 3                         9 - 3 
MELSEC-Q
9   TROUBLESHOOTING 
 
9.1.1 Confirming the error definitions using system monitor of GX Developer 
Choosing Module's detailed information in the system monitor of GX Developer allows 
you to confirm the error code. 
 
(1)   Operation of GX Developer 
Choose [Diagnostics]   [System monitor]   "QD60P8-G module" and choose 
Module's Detailed Information
. 
 
(2)   Confirmation of error code 
The error code appears in the latest error code field. 
(By pressing the  Error History
 button, the definition shown as the latest error 
code appears at No. 1.) 
 
[Error display details]
Error code of CHn
CHn (1    n    8)
[Present Error]
Means error code 300
"Movement averaging setting range outside error".
[Display format]
Select "Decimal".
(The error codes indicated in 
"Section 9.3 List of errors" 
are in decimal.)