error -200279 DAQmx

[ThijsBoeree]

Hi,

I am reading 3 channels of data into a waveform chart at a speed of 512 Hz, and my waveform chart seems to slow down over time and eventualy stops working, then i get the error -200279?

ReadSamples.vi<append>
<B>Property: </B>RelativeTo
<B>Corresponding Value: </B>Current Read Position
<B>Property: </B>Offset
<B>Corresponding Value: </B>0

<B>Task Name: </B>AnalogInput

I use a master/slave message handler structure and in my master is the "read samples" vi which reads 4 samples at a time, when i display 1 channel it works okay, but the more channels i display the slower it gets...?  

Best regards,

Thijs

[Knoxberry · Accepted solution]

It looks like you are getting a buffer overflow... You aren't reading data into your application fast enough. 

http://digital.ni.com/public.nsf/allkb/AB7D4CA85967804586257380006F0E62

[ThijsBoeree]

I have a hidden slider covering my waveformchart, that i use as a calibration tool... Could that be the case? In another app i read 33 channels into my waveform chart at some slower speed and that works flawless...

Thanks for the link! I see a very usefull tip: the monitor buffer option! Than i can check what happens!
Best Regards,
Thijs