DAQmx read without waiting for buffer refill

[MTNBZBG]

Hello,

I am using the continous acquisition mode and want to read at any time the 50 latest values out of the buffer without waiting for refilling.

I have found no setting to do this, the DAQmx read function is always waiting until the buffer is filled with the next 50 values.

Of course I could set the buffersize to 1 and read every single value, but that would be very time consuming.

Best regards,

Metin

[Chrisi93]

Hi MTNBZBG,

it is not possible to read the buffer without waiting for refilling.

If you have selected a buffersize of 50 do you have to wait for refill.

But you have the choice to use a Lossy Enqueue function.

So you have the chance to read just the last 50 elements out of the Queue.

http://forums.ni.com/t5/LabVIEW/When-to-use-lossy-Enqueue-Element-vs-Regular-Enqueue-non-lossy/td-p/...

[Kevin_Price]

Correction, it definitely IS possible to do this, I've done it often.

See this thread for a snippet that shows how.

-Kevin P