Hitachi CMU Series User Manual page 69

4 OPERATION
• Change time
Opens the [Change Measurement Time] window, which allows you to change the
measurement time. The measurement time setting entered from the [Change
Measurement Time] window appears in the "Measurement time" box in the [Performance]
window.
This button also clears the current value, maximum value, and minimum value from the
"CMU Load percentage" area, and starts a CMU load percentage measurement process at
the changed measurement time setting.
• OK button
Closes the [Performance] window.
• Refresh
Displays the current values.
• Start Monitoring button
Starts monitoring the sequence cycle and CMU load factor.
• Stop Monitoring button
Stops monitoring the sequence cycle and CMU load factor.
(*) The total time required for execution of ladder programs and HI-FLOW processes is
shown shaded in the figure below.
Sequence cycle
interrupt
Ladder process +
HI-FLOW process
Execution time
(2) [Change Measurement Time] window
Changes the CMU load percentage measurement time.
• "Measurement time" box
Changes the CMU load percentage measurement time setting in 1-second units. The
setting range is from 1 to 60 seconds. The default setting is 1 second. When the
measurement time setting is changed from the [Change Measurement Time] window, the
new setting becomes the default value the next time the window opens.
• OK button
Acquires the value in the "Measurement time" box and closes the [Change Measurement
Time] window.
• Cancel button
Closes the [Change Measurement Time] window without changing the measurement time.
button
button
Sequence cycle
Idle time
Sequence cycle
interrupt
Sequence cycle
Ladder process +
HI-FLOW process
Execution time
4-18
Sequence cycle
interrupt
t
Idle time