Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 904

I/O refresh processing time
The I/O refresh processing time for module mounted on main base unit and extension base unit can be calculated by the
following formula.
I/O refresh processing time [s] = ((Number of input refresh points
*3
 KM2) + KM3
) + ((Number of output refresh points
*3
KM6 )
*1 The value indicates the numeric value that is obtained through dividing the number of input points by 16.
*2 The value indicates the numeric value that is obtained through dividing the number of output points by 16.
*3 When the number of I/O points is 0, this value is handled as 0.
Condition
MELSEC iQ-R series module
Q series module
APPX
902
Appendix 9 Processing Time
Main base unit Input
Output
Extension base unit Input
Output
RQ extension base unit Input
Output
Q series extension base unit Input
Output
*1
 KM1) + (Number of unit having number of input points
*2
 KM4) + (Number of unit having number of output points  KM5) +
KM1
KM2
KM3
KM4
KM5
KM6
KM1
KM2
KM3
KM4
KM5
KM6
KM1
KM2
KM3
KM4
KM5
KM6
KM1
KM2
KM3
KM4
KM5
KM6
Constant value
0.04
0.56
11.2
0.02
0.94
6.30
0.04
0.56
11.2
0.02
0.94
6.30
1.15
1.33
24.0
0.03
1.20
6.21
1.85
1.98
39.4
0.02
1.29
6.01