Using hardware refnum (refnum type is string)

[mw42]

Hi,

I want to implement my DAQ hardware into my DQHM design and for that, I need to initialize my hardware. Normally, I do it like this:

But here, I have to use a string for my "HW refnum" (this example is from the CML DQHM example). I don't understand how to do that.

Would someone please be so kind as to enlighten me?

Thank you

mw42

[Bob_Schor]

We cannot help with what we cannot see.  Instead of attaching a picture (very tiny type) of a small (and possibly irrelevant?) part of your DQMH, please compress the Folder that contains your LabVIEW Project and attach the resulting .zip file, along with a note telling us where to find the code you want us to examine.

Bob Schor

[mw42]

Hello Bob,

thank you for your reply. I do apologize for my previous post with so little usable information.

Please find attached a .zip file containing both the "CML DQHM Project" and the VIs with my usual "acquire data from cDAQ" code.

To specify the problem: There are a couple of VIs in the CML DQHM project folder (Modules -> Acquisition.lvlib -> HW calls) where I need to initialize my real hardware (see picture below):

The "Initialize Hardware References.vi" looks like this:

My code uses the "DAQmx Create Task.vi" and the output is of type "DAQmx event".

I already placed my code in several Sub-VIs so I would be able to implement those in the "Initialize Hardware Reference.vi". But how would I do that while the refnum type being "String" instead of "DAQmx task"?

Please find all necessary code attached. I do hope that I was able to clarify my problem.

Thanks

[mw42]

I went ahead and implemented my code but I get an error:

I attached the project with my changes, also here is what I changed in two modules:

1) In the "acquisition.lvlib > HW Calls > Initialize Hardware References.vi"

2) In the "acquisition.lvlib > HW Calls > Acquire.vi"

Note: The SubVI in the error message is this one here (with the number 5 in the label)