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6.13 Execution Time Measurement
6.13.3 Scan time measurement
6
FUNCTIONS
6.13.3 Scan time measurementNote32
(1) Definition of Scan Time Measurement
This function displays the set program interval processing time.
The time for the subroutines and interrupt program can be measured as well.
(2) Scan time measurement range designation
To specify a scan time measurement range, follow either of the following two steps:
• Make the setting on the "Ladder monitor" window.
• Make the setting on the "Scan Time Measurement" dialog box.
(3) When subroutine program call instruction exists
The time includes the time required for processing subroutines, when the subroutine
CALL instruction is within the range of scan time measurement.
(4) When interrupt program/fixed scan execution type program is executed
The amount of time required for executing interruption programs and fixed scan
execution type programs is all added to this.
(5) Measuring Scan Time
To measure scan time, follow the following steps.
• Display the beginning of the ladder of which scan time will be measured, on GX
Developer, select the monitor mode.
Note32
Diagram 6.47 When subroutine program is included in measurement range
Basic
Note6.32
The Basic model QCPU does not support the scan time measurement.
Basic
Note6.32
Main
program
Subroutine
program
Measurement range
Measurement range