Best way to make a simple Boolean test?

Hi all

Try to do a simple Boolean test, but it is more difficult than I expected.  I hope I'm missing something simple.

I have a module of Labview code that provides a Boolean output.  I want to evaluate this value and provide the report pass/fail results.  Sounds simple, but here is what I'm running into:

-Step OR built-in type "pass/fail Test" will evaluate the Boolean value directly with Pass = True and False = Fail.  It would be nice, unless I have situations where I need to Pass equal false.  I read a few posts talking about reversing or annulling the Boolean result, but they are all passing the result to a variable or a parameter and then evaluation outside of the test step.  This adds several layers, I don't think that I would need.

-J' read a post that suggested that convert the Boolean value of a digital inside the code module.  It is indeed logical, but is not practical in my situation because of the scale and the implementation of my modules of code.  I use the definitions of custom type for controls and indicators a Labview project and would have to create a new control/light for everyone if I wanted to change the data type.

-Logical extension was to see if the 'numerical limit Test' would recognize a Boolean value.  It turns out that it is not.

-After that, I looked in the creation of a custom step type.  It would be probably the most useful, but this is beyond my current capabilities to do so.  I had as far as making a copy of the stage built in type and put in the MyTypes 'custom' directory, but I made very little progress in editing to make it work.  In addition, I read a few messages that recommend to avoid the custom step types.

Hoping someone can point me in the right direction.  Please notify.

Thank you

GSinMN

GSinMN,

I would enter "Step.Result.PassFail" for the Boolean output on your VI parameter (kinda like a normal part of pass/fail Test), and on the Data Source tab, you can add an exclamation at the front, for example:! Step.Result.PassFail. This will reduce to zero the value of production and use the result of this for the comparison.

If you want to save the actual production of the VI to the report (for example), you can check the "Log" option for the setting in the module settings.

Tags: NI Software

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