niScope Get Session vi error

[ishara123]

Hi,

I am trying to run niScope Get Session Reference.vi on my system. But I got an error in the niScope Get Session Reference.vi. It requires a refnum and the niScope Get Session Reference.vi  provided by NI does not provide a valid input for this function. For the convenience I have attached the error massage with this. I am using Labview 2012 and I have installed all the drivers correctly. Can anyone help me to solve this problem? Thank you very much!

[James-K]

ishara,

Could you post your VI so that we can get a better look at exactly what is going on?

[ishara123]

Hi James,

Sorry for the delay. Here are my screen shots. Thank you so much!

[Joshua-B]

Hi ishara123,

Could you please clarify what you are trying to do?  I don't see the niScope Get Session Reference.vi on your block diagram.  This VI is used to get a session reference for use with the NI-TClk API.  Are you trying to use NI-TClk to synchronize multiple devices?

[Jon112233]

Hello Joshua and James,

I work with Ishara123.

We are trying to run multiple instruments at the same time.

But, the ni-scope is running in a loop. The close vi that is on the ni-scope palette will not run.

This leads to a build up of unclosed sessions as the instruments run.

Basically, we need something that can close the session at the end of the while loop so that it can run for days without slowing down the computer and eventually crashing it.

We have labview 2012 installed.

And according to some of the other forum posts, labview 7.1 can run this vi without issue.

That post is years old, so I imagine there is some sort of quick fix by now.

However, I cannot seem to find it.

[James-K]

Jon,

Can you put your initialize and clear session VIs outside of the loop?  If I understand your question correctly, this should help resolve the issue.