6
FUNCTIONS
6.13 Execution Time Measurement
6.13.3 Scan time measurement
6 - 101
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication using
built-in Ethernet ports of
CPU module
8
Communication with
Intelligent Function
Module
Remark
When the Scan time measurement screen is displayed after specifying the target
rage in monitor mode, the start step and end step of the specified range are set in
the Start step and End step fields.
To specify the range in monitor mode, use the "Shift" key and click of a mouse.
(6) Precautions
(a) Measurement range setting
Set the measurement range ("Measurement limit") so that the following condition
is satisfied.(Start step) < (End step)
(b) Scan time measurement across program files
Scan time cannot be measured across program files.
(c) Measurement time minimum unit
1) High Performance model QCPU, Process CPU, and Redundant CPU
The measurement time minimum unit is 0.100ms.
If the measurement time is less than 0.100ms, 0.000ms is displayed.
2) Universal model QCPU
The measurement time minimum unit is 0.01ms.
If the measurement time is less than 0.01ms, 0.000ms is displayed.
(d) Step specification between the FOR and NEXT instructions
If the steps between the FOR and NEXT instructions are specified, measurement
time indicates the execution time of one scan between the specified steps.
Figure 6.67 Measurement range designation
Y20
M0
50
Y21
52
Y22
104
106
END
M1
M2
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