9 PLC Setup
9-16
CJ2 CPU Unit Software User’s Manual
• Conditions for Enabling a Minimum Cycle Time
Set the minimum cycle time to a non-zero value to eliminate inconsistencies in I/O responses. This
parameter is effective only when the actual cycle time is shorter than the minimum cycle time set-
ting. If the actual cycle time is longer than the minimum cycle time setting, the actual cycle time will
remain unchanged.
z Scheduled Interrupt Interval
This parameter sets the time unit used in scheduled interrupt intervals to 1 ms, 0.1, or the default of
10 ms.
g
• Scheduled Interrupt Time Unit
This parameter sets the time unit for the scheduled interrupt interval settings. Set the scheduled
interrupt interval from the program with MSKS(690).
Parameter Settings Default Function
Related
flags and
words
Scheduled
Interrupt
Interval
• 10 ms
• 1.0 ms
• 0.1 ms
10 ms This setting determines the time units used in sched-
uled interrupt interval settings.
---
Refresh
Refresh
Refresh
Actual processing
time
Refresh
Actual processing
time
Refresh
Refresh
Wait time
Wait time
Wait time
The refresh intervals
are not constant.
Value set for minimum cycle time
Minimum Cycle Time Not Set
Minimum Cycle Time Set
1st cycle time
2nd cycle time
3rd cycle time
1st cycle time
2nd cycle time
3rd cycle time
The I/O will be refreshed within the time set for the minimum cycle time.
Adjustment according
to the wait time
Actual processing
time
Actual processing
time
Actual processing
time
Actual processing
time
Scheduled Interrupt Time Units
Interval
Scheduled interrupt task
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