Combining results of previous steps into numerical test

[stephenb2]

I'm relatively new to TestStand. Here is what I am trying to do.

1. Call VI A with numerical limits, make measurement, store value in sequence local.
2. Call VI B without numerical limits, make measurement, store value in sequence local.
3. Calculate: measurement A - measurement B. Compare the result to numerical limits.

Do I need to create a very simple VI with just two inputs, a subtraction function, and an output as a LabVIEW numerical limit step to implement step 3, or is there a more recommended way to do it?

Thanks.

Stephen

[~jiggawax~ · Accepted solution]

Here's what I would do:

Call VI A as an action step.  Store the measurement in a local variable

Call VI B as an action step.  Store the measurement in a local variable

Use the None Adapter to create a Numeric Limit Step.  Set the Data Source to Locals.AValue - Locals.BValue

[stephenb2]

The None Adapter. Who knew? 🙂 Thanks.