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STEP 7 / STEP 7 Lite

cyclic inturrupt

Thread Starter: boazeventall   Started: 4/11/2012 11:46 AM   Replies: 2

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  4/11/2012, 11:46 AM
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Each cyclic event can be assigned a phase shift so that the execution of cyclic interrupts with  
 the same scan time can be offset from one another by the phase shift amount

what is that means?
that when my program run in 1 cycle and ther is calling to cyclic inturrupt  then in 1 time cycle ther will be only 1 event from the cyclic inturrupt ?
each time cycle cyclic inturrupt executed only 1? unless i change the phase shift?
and what is the phase shift option ? when i change it from 0 to 1 or 2
?
what will append
?
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  4/11/2012, 12:47 PM
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Hello,

I think the online help is clear about that.

See attachment.

Regards,

Marcjan

Attachment: Cyclic Interrups.pdf  (6 Downloads)

Problem solved?
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  4/11/2012, 12:51 PM
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Cyclic interrupts have offset for following - imagine you have all OB3x in your programm. When 10s passes ALL of these interrupts become active. This is generally not good - so if you assign offsets you can allow some OB to execute after other. This way you have more defined programm behavior.
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