CVI call Module direction

[EDM_S_M]

Hi guys!

I hope you are doing fine

I write this to ask for your support and experience

Here we are using an NFC sensor “Orbit” for this a CVI module calls the DLL  to use the sensor

As you  can see on the next image the sequence is pretty simple, since most of the job is done by the cvi module, we tell the module where the dll is, and it takes care of the rest

Inputs/outputs

Never the less, the first time we run the sequence, we get an error “-3” that indicates that the communication session was not able to be opened

If we test again the error remains

To fix this, what we need to do is just go to the module and select the dll inside the project folder. Please note that this is the same path that was set in the first place!

After that simple procedure, we get no errors

We have tried to store the dll on a different location

Use absolute / Not absolute path

Use a VI to handle the DLL, this will crash labview when ran

But the problem remains 

Do you have an idea of how we can address this?

Maybe a workaround by dynamically set the location of the DLL, as it is done by hand

Thanks is advance 

Edmundo 

[mkossmann]

Did you read about dynamic-link-library-search-order  on windows ? AFAIK you have to follow these conventions to ensure that the DLL is found automagically.