Reg Event Callback

[Evgeni]

I need count number of frames that occur.To count frames I use Reg Event Callback.To activate this func properly I need connect Event callback to VI.ref.My question is how I nedd modify Event callback to get the number of events.

[Volker_Wick]

You could pass a numeric refnum to the user parameter of the Reg Event Callback node.  In the callback VI, you would increment the Value using that reference.  This way you could check the current count through a numeric on your main VI.

Another solution would be a global variable that you increment in your callback VI.

Volker