After Expression

I charge my limits from a text file using the shipper of the property. It updates a table of FileGlobals.

All my tests have limits defined like this (using the tab limits):

(1)

Low FileGlobals.GF_TestSpec.step_0101.LimitLo

High FileGlobals.GF_TestSpec.step_0101.LimitHi

I use the following expression after (index expression has been simplified for this example):

(2)

FileGlobals.Results [0]. He'S [index] = Str (Step.Limits.Low),

FileGlobals.Results [0]. HL [index] = Str (Step.Limits.High)

The first ttime it works my limits are 0,0, the second time and the third etc... they are correct (27-32), as in the text file.

I'm assuming that (1) has not held until the situation real expression is evaluated and after expression is executed before. Any ideas how to solve this problem? It is a sequence of 300 + tests, already in production. Remote access is my only option so I wouldn't rewrite it.

Thank you

CT

You can change your expression of post to also evaluate expressions. Something like the following:

FileGlobals.Results [0]. He'S [index] = Str (Evaluate (Step.Limits.LowExpr)),

FileGlobals.Results [0]. HL [index] = Str (Evaluate (Step.Limits.HighExpr))

It will be ok as long as there are no side effects of the evaluation of your expressions twice. If they are just specifying variables, it should be ok.

Another idea is to load limits directly in stages, rather than in the file globals and don't not specify that the limits of expression, rather, let the load correctly loaded their values.

Hope this helps,

-Doug

Tags: NI Software

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