The priority level of while loop on real time target

[tom_z]

Hi,

    You can specify the priority level on timed loop on real time target. If I use both timed loop and while loop what is the priority of the while loop? Always lower than timed loop?

    Thanks!

    Regards,

    Tom

[Ben]

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@tom_z wrote:

Hi,

    You can specify the priority level on timed loop on real time target. If I use both timed loop and while loop what is the priority of the while loop? Always lower than timed loop?

    Thanks!

    Regards,

    Tom

---

Depends.

Is the while loop in a trime critical VI?

Is the while loop inside a timed seq diagram (that can be used in the smae way as the Timed Loop priority).

Ben

[tom_z]

If the while loop is not in any timed structure such as timed loop and sequence will it have lower priority compared to any timed structure?

Thanks!

Regards,

Tom

[CMal]

Tom,

You may find this document helpful for understanding how priorities work between timed loops and VIs on RT:

http://zone.ni.com/reference/en-XX/help/370622H-01/lvrtbestpractices/rt_priorities/

A regular while loop will have the priority of the VI that calls it (background, normal, above normal, high, time-critical, above time-critical).  All timed loops have a priority above "high" and below "time-critical".  It is generally recommended that you use either timed loops or VI priorities to prioritize your application, but you should not use both strategies together because it can cause a good deal of confusion.

Chris M

[tom_z]

Hi Chris,

    Thanks for help. It is very clear.

    Tom