Mitsubishi Electric MELSEC-Q Series User Manual page 33

(2) Double check mode setting
Set the double check mode using "Switch 3" of "Switch setting for I/O and intelligent function module".
The QJ51AW12D2 with a serial number where the sixth digit is "6" or later can be set.
 Correspondence between the value from 0 to 40 set for "Switch 3" and the double check
Bit data at all points are double-checked.
Word data of the first word are double-checked. At the remaining points, bit data are double-
checked.
Word data of the first two words are double-checked. At the remaining points, bit data are double-
checked.
Word data of the first three words are double-checked. At the remaining points, bit data are double-
checked.
Word data of the first 63 words are double-checked. At the remaining points, bit data are double-
checked.
Word data at all points are double-checked.
*1 The value other than 0 to 40 is reserved by the system. Do not change the settings.
Double check

CHAPTER 3 OPERATION MODE
Enter a value from 0 to 40
in this column.
*1
"Switch 3"
0
1
2
3

3F
40
31
3