Rockwell Automation 5730 DriveLogix5730 Controller for PowerFlex 700S Drives with Phase II Control - Manual (Page 23)

What is DriveLogix5730? 1-11
The interruption of a periodic task increases the elapsed time (clock time)
between the execution of system overhead, as shown below.
If you increase the time slice to 20%, the system overhead interrupts the
continuous task every 4 ms (of continuous task time).
If you increase the time slice to 50%, the system overhead interrupts the
continuous task every 1 ms (of continuous task time).
If the controller only contains a periodic task(s), the system overhead
timeslice value has no effect. System overhead runs whenever a periodic
task is not running.
1 ms 1 ms 1 ms 1 ms 1ms
periodic task
1 ms 1 ms
system overhead
9 ms of continuous task time 9 ms of continuous task time
continuous task
0 5 10 15 20 25
elapsed time (ms)
1 ms 1 ms 1 ms 1 ms 1 ms
system overhead
4 ms 4 ms 4 ms 4 ms 4 ms
continuous task
5 10 15 20 25
elapsed time (ms)
1 ms
system overhead
1 ms
continuous task
5 10 15 20 25
elapsed time (ms)
periodic task
system overhead
5 10 15 20 25
continuous task
elapsed time (ms)