Lack of data triggering

[bbentelin]

If my system does not receive any data within a ~10 second span, it begins spitting out values of 0 into the histograms.  I have already removed the error messages so that the system does not stop entirely.  I want to system to wait indefinitely for a data point ... is there a variable that sets this time limit for triggers?  I'm using ni-scope VIs for the DAQ process.

[tbob]

Is it possible to post your code so we can look at it?  Its hard to tell what is wrong when you give so little to go on.

[bbentelin]

Ya, I'll post it tomorrow when I'm back in the lab.

[bbentelin]

Here is the VI.

[JVP]

Hello bbentelin,

Could you tell us what daq device you are using? As well as more information about your application? You mentioned in your first post you are using NI-Scope for DAQ device, do you have a Multifunction DAQ device or NI Scope device?

Regards,

Jignesh

[tbob · Accepted solution]

Look at the context help for the function niScope Multi Read Cluster.vi, then look at the description for the Timeout terminal.  It says to use a value of -1 to wait for an infinite amount of time for data input.  If you create a constant on the terminal, you will see that the default is 5 seconds.  That is why you are getting values of 0 even though there is no input.  But setting the timeout to -1, your problem should be solved.

Bon Chance!

[bbentelin]

Merveilleux! Merci Beaucoup!