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MELSEC-Q 
 
1    GENERAL SPECIFICATIONS AND PRECAUTIONS FOR USE 
1.3.2 Setting of error-time output mode 
Set the error-time output mode on the I/O assignment tab of PLC parameter in GX 
Developer. 
Select "Output" or "I/O mix" in the "Type" combo box on the I/O assignment tab of PLC 
parameter. Then, click the "Detailed setting" button, and then select "Clear" or "Hold" in 
the "Error time output mode" combo box. 
 
 
 
 
Choose Clear/Hold
             (default: Clear).
Choose Output/I/O mix. Choose Detailed setting.