Rockwell-automation 1794-L34 FlexLogix Controller System User Manual Uživatelský manuál stáhnout pdf (Strana 84)

Publication 1794-UM001G-EN-P - January 2007

84 Develop Applications

If you use the default time slice of 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 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 ... 79 80 81 82 83 84 85 86 87 88 89 ... 129 130

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Rockwell-automation 1794-L34 FlexLogix Controller System User Manual Uživatelský manuál Strana 84