Rockwell-automation 5730 DriveLogix5730 Controller for PowerFlex 700S Manuel d'utilisateur télécharger pdf (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 10152025

elapsed time (ms)

1 ms

system overhead

1 ms

continuous task

5 10152025

elapsed time (ms)

periodic task

system overhead

5 10152025

continuous task

elapsed time (ms)

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 216 217

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Rockwell-automation 5730 DriveLogix5730 Controller for PowerFlex 700S Manuel d'utilisateur Page 23