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APPX
Appendix 9 Processing Time
911
A
■
Sequence scan synchronization sampling function
When the sequence scan synchronization sampling 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
Number of processing times
*1
) + (KM2
Total number of points of device that has been
set
*2
) + (KM3
Number of settings
*2
) + (KM4
Number of modules
*3
) + KM5
*1 The number of processing times indicates the number of times to perform the processing for 64 points of the device that can be
processed at a time. The number of times is calculated by the total number of points of device that has been set n
64. (The decimal
point is rounded up.)
*2 For the device types and number of settings that can be set, refer to the manual for the module used.
*3 The number of modules indicates the total number of modules which has executed this function.
■
File batch online change
When the file batch online change is executed, the scan time becomes longer. The increase in scan time [ms] can be
calculated by the following formula.
*1 For R00CPU, R01CPU, R02CPU, calculate with calculation formula for "when SM388 is on" in the above table. For R00CPU, R01CPU,
R02CPU, the operation setting status is set to "program file/FB file/global label setting file" regardless of the SM388 setting.
*2 This indicates the number of program files which are written to the CPU module.
*3 The largest number of steps for the programs which are performed the file batch online change.
*4 The number of the program files which are performed the file batch online change.
*5 The total number of steps for the program files which are performed the file batch online change.
The number of steps for each program file can be checked [Confirm Memory Size (Offline)] in [Tool] of the
engineering tool.
■
Simple CPU communication function
The processing time of the simple CPU communication function (the increase in END processing time for the CPU module)
can be calculated by the following formula.
Processing time of the simple CPU communication function [
s] = KM1 +
T
1
+
T
2
+ ··· +
T
n
•
T
n
[
s] = KM2 + KM3
(number of bit points to be communicated
16 + number of word points to be communicated) +
E
n
•
E
n
[
s] = KM4 + KM5
(number of bit points to be communicated
16 + number of word points to be communicated)
Constant
Constant value
KM1
8.00
KM2
0.42
KM3
0.20
KM4
24.00
KM5
85.00
Condition
Calculation formula
Constant value
When SM388 is off
(Program file only)
(KM1
Number of program files
) + (KM2
Maximum number of steps in programs
) + KM3
KM1: 0.018
KM2: 0.06
10
-3
KM3: 0.9
When SM388 is on
(Program file/FB file/global
label setting file)
(KM4
number of write target program files
) + (KM5
total number of steps in programs
)
KM4: 2.34
KM5: 0.06
10
-3
•
T
n
: Simple CPU communication processing time per setting
•
E
n
: Additional time when the file register (R, ZR) is used (It is added when the file register (R, ZR) is used.)
• n: Number of settings
Condition
Constant value
KM1
60.00
KM2
0.90
KM3
0.024
KM4
1.60
KM5
When the extended SRAM cassette or battery-less option cassette is not used
0.10
When the extended SRAM cassette or battery-less option cassette is used
0.13
Содержание MELSEC iQ-R-R00CPU
Страница 2: ......
Страница 151: ...9 MONITOR FUNCTION 9 1 Real Time Monitor Function 149 9 MEMO ...
Страница 323: ...18 SEQUENCE SCAN SYNCHRONIZATION SAMPLING FUNCTION 321 18 MEMO ...
Страница 330: ...328 20 ROUTING SETTING 20 3 Precautions MEMO ...
Страница 423: ...26 BASIC CONCEPT 26 8 State Transition of the Redundant System 421 26 MEMO ...
Страница 524: ...522 30 MAINTENANCE AND INSPECTION FOR A REDUNDANT SYSTEM 30 1 Module Replacement in the Redundant System MEMO ...
Страница 1009: ...APPX Appendix 14 List of Available SQL Commands for CPU Module Database Access Function 1007 A MEMO ...
Страница 1014: ...1012 APPX Appendix 15 Added and Enhanced Functions MEMO ...
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