Mitsubishi Q2ACPU User Manual page 161

9. MAINTENANCE FUNCTION
(5) It is possible to select whether or not the following checks are performed by setting
"Yes/No" for error check in PC RAS setting in the parameter mode.
1) Battery Check
2) Fuse Blown Check
3) I/O Unit Compare
(The default for all of these in the parameter settings is "Yes".)
If "No" is set for error check, error detection is not performed for these items, which
shortens the processing time for the END instruction.
Even if "Yes" for error check is set in the parameter, 1) thorugh 3), above error check,
can be canceled by turning on the special relay SM1084.
However, if "No" is set in the parameter, turning off SM1084 is ineffective to execute
the error check.
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