Multiple numeric test with cluster from labview?

[Alteschwed]

Is it possible to make a multiple numeric limit test with the values from a cluster from a labview vi?

[Norbert_B · Accepted solution]

As it is called "Multiple Numeric Limit" step, the data has to be numeric. So the cluster already contains only numeric fields.

Given that, i would cast the cluster within the module to an array (Cluster to Array). The disadvantage of this is that all fields in the array share the data type, so all are double or single or I32, ....

Other solutions won't work with the default step type, but you could create your own step type to accept a cluster similar to the Multiple Numeric, which only accepts an array.

Norbert

[SachaE]

This can be done with a little work.
The first step is to get the cluster's data back in to TestStand's memory space as you would do normally.
Then you either use post expressions (since you're at a point in time between the test code module completing and the status evaluation) to move the pertinent parts in to the data source for the step (usually step.numericarray) or...
https://www.ni.com/docs/en-US/bundle/teststand/page/multiple-numeric-limit-test-step-type.html
And
https://www.ni.com/docs/en-US/bundle/teststand-api-reference/page/tsref/multiple-numeric-limit-test-...
Use the 'specify data source for each measurement''.
I'm not in front of a computer with TestStand right now to knock up an example but it should be pretty straight forward.
Either method should allow you to work with a mixed cluster of data types and just evaluate on the numeric ones.
Thanks
Sacha

[DowNow_]

what kind of cluster is it?

cc

[Alteschwed]

Hello all

Thanks for your advices. But im sorry last days i could not continou to work on this project i had to do other work. But as soon as possible i ll try the solution.

The cluster is just with numeric values. And what i dont like with the cluster to array solution is that i lose the names of the values.

I ll write again here next week to reply when i could try.

Greets

Christoph

[Norbert_B]

Christoph,

in TS, you can provide names for each field of an array. This, of course, is rather static and does not adopt to LV "cluster to array" elements.

Norbert

[Alteschwed]

Hello Guys thanks it s solved now. Cluster to array solution. But one problem i still have. How i can write my 7 array values whitch i have now in TS  to 7 local variables? It s for the end of the test to write all measurements of the complete test in a csv.

[Alteschwed]

Hello again.

I think it s solved with this.

https://forums.ni.com/t5/NI-TestStand/using-post-expression-to-copy-more-than-one-local-variables/m-...

Cheers Guys

Christoph