Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 911

Prolonged time of END processing when executing each function
This section describes the prolonged time of END processing when executing each function.
■Latch processing time
If the latch function is used and the range for the latch time setting is effective, the scan time becomes longer. Also when the
time setting is configured for the latch time setting, the scan time may be prolonged in the next END processing after the
specified time has passed. The increase in scan time when the latch range is set can be calculated by the following formula.
Increase in scan time[s] = (KM1  Number of settings of latch range setting
latch specified  16 + Number of points of word device with latch specified + Number of points of double word device with
latch specified  2)) + KM3
*1 The latch range (1) and the latch range (2) are counted as different device types.
Condition
When set to "each scan" KM1
KM2
KM3
When set to "hour" KM1
KM2
KM3
■Data logging function
When the data logging function is executed, the scan time becomes longer. The increase in scan time can be calculated by
the following formula.
Increase in scan time [s] = KM1 + (KM2  Number of data logging settings) + (KM3  Number of device points of internal
*1
device )
*1 This indicates the total number of points of data logging setting No.1 to No.10.
Condition
When all the columns are
outputted under the condition of
file format of Unicode text file
■Data logging file transfer function
In the data logging file transfer function, the scan time does not increase.
■Processing time when file register is used
When "Use File Register of Each Program" has been set through setting the file register, the scan time becomes longer. The
increase in the scan time [ms] is given by: the number of program files  0.016.
When "Use Common File Register in All Programs" has been set, the scan time may not become longer.
When the battery-less option cassette is not used
When the battery-less option cassette is used
Constant value
Programmable
controller CPU
KM1 34
KM2 34
KM3 0.08
*1
) + (KM2  (Number of points of bit device with
Constant value
1.00
0.09
0.1
1.20
1.0
0.004
17.5
Process CPU Process CPU
(process mode) (redundant mode)
35
37
0.35
Safety CPU
34
34
0.08
APPX
Appendix 9 Processing Time
A
909