Verification of task names valid in the basis of NOR-DAQ

Hello

I have a question about the configuration of the tasks in the version of Base of NOR-DAQmx (I need basic because the application will need to be able to run on both Windows and Mac computers). The material is a box USB-6009, ordered through LabView. When you create a task inside LabView, is it possible to tell if the name you choose is already in use or not?  Similarly, is it possible to get a list of and if all tasks are running?

The context is that I have a subroutine that made a brief burst of acquistion of analog input and then passes the result to the caller. I would like also to the subroutine to run standalone for different testing purposes. Normally, I would have the subroutine create and configure a task, the measure and then close the task. The problem is that the process of create/set up/start takes about 200-250 milliseconds (the measure itself is about 20 ms) that is long enough that I don't want to go through it whenever the subroutine is called from the top (I need to call this routine and do some other stuff a few times per second). So what I would is have the name of the task as a control on the subroutine, test that the value is a valid and if not valid only the initialization/etc. in the context of the subroutine, but if the subroutine has been passed a valid task from the top to skip a step all the time.

Looking through all of Base of NOR-DAQ functions, it doesn't seem to be something that allows me to do this kind of check with the exception of brute force to try to create a task and trapping so all errors that might be generated.

Suggestions (or ways) welcome.

Kelsey,

It seems that the property node is a component DAQmx, not a component DAQmx Base .  I can't find any DAQmx Base property nodes.

dmsilev,

Try to replace the property node of the tasks with the DAQmx Base get tasks.vi.  It is not in the DAQmx Base palette. It's a Subvi DAQmx Base create Task.vi.  Caution: when you use a Subvi, which isn't on the pallets, know that they are generally not documented well and are subject to change in future versions of LV

If you weren't aware, DAQmx Base is written in LV and almost all the diagrams are not p [rotege so you can look inside and see how things are doing.

Lynn

Tags: NI Hardware

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    ---------------
    Sybrand Bakker
    Senior Oracle DBA

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    Kind regards
    Deepak

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