Trouble with USB device, not found in MAX or LV

[mittleiderj]

I am attempting to communicate with a device, ADU71 (USB to Current output) from Ontrak.net through a USB port. When initially installed the default windows drivers. The device worked well with the provided vendor executable. However when attempting to control from Labview the deviceis not visable in MAX or Labview.

I built a Labview driver using NI-Visa Wizard. The driver was visible in MAX but not in Labview. It also killed the device in the vendor executable. I don't no if the device is USBTMC compatible. I'm using Windows 7.

Can some one help with this?

Thanks

[Dennis_Knutson]

Remove what you did with the wizard. You won't see the third party device in MAX. The vendor should have an API that you can use. Ask them if they have a LabVIEW interface to it.

[mittleiderj]

There is  a .DLL and .h provided. I'm not familiar with using the Call Library Function so I guess I need to learn. Can anyone help with that?

[Hooovahh]

If you have the DLL and the H then you might be able to use the importer.  I've never had much luck with it but I always try.

https://www.ni.com/docs/en-US/bundle/labview/page/using-the-import-shared-library-wizard.html

https://www.ni.com/docs/en-US/bundle/labview/page/importing-functions-from-a-shared-library-file.htm...

[mittleiderj]

Yes, I gave it a try and it seems to have created some interesting vi's. Unfortunately the functions require passing and recieving pointers to data. I don't know how to do that. I'm investigating that now. Are you familiar with this process?

[Hooovahh]

I've never done it but I know there can be extra work involved.  Here are a few links

https://forums.ni.com/t5/Developer-Center-Resources/Passing-and-Receiving-Pointers-with-C-C-DLLs-fro...

https://forums.ni.com/t5/Developer-Center-Resources/Dereferencing-Pointers-from-C-C-DLLs-in-LabVIEW/...