DAQ mx Read Error -200279

[Mudda]

In my VI I am reading the data when ever a button is pressed, when the application is running if I press the button to collect the data, it's colleting the data for coyple of times but when I press it again its showing an Error. The description of the Error is : "Error - 200279, Atempted to read samples that are no longer available, The requested sample was previously available, but has since been overwritten". In my VI I wired -1 to the no. samples input.

Mudda.

[Dr._Imad]

This is a buffer overflow message. Normally the data should be read as it is being collected. You probably waited for some time before the next read (the data is being collected during that time), the buffer gets filled and is over written.

Increase the number of samples to read at a time, and as long as data are being collected, you shoukd read it. If the the data at times are not needed and yet is being collected, you still have to read it. If you do not want to, then you have to clear the Task.