get daqmx write values from card

[Akiel]

I have a bit of an odd question, is it possible to get the write values from a pxi card (analogue or digital outputs)? i have been having a look in the property nodes but to no avail. 

thanks in advance 

[P@Anand]

Upto my knowledge there is no such option available. Normally what we do is we will take whatever the value that is applied to the DAQmx Write.vi. at the low level assuming that the output of the hardware will be the same.

[Akiel]

thanks the quick reply. Its certainly looking like there isnt an option to do what im looking for. and normally i would log the value i am passing to the daqmx write. I was looking for a quick way to log it. If i explain in vague terms the set up I have, I have one loop that is constently reading data from a pxi card, pasing the data to a queue to be displayed. In parallel i have loop writing signals to the pxi cards at configurable time intervals. Nothing too complecated. I am logging all the pxi readings in a cluster that placed in a queue ready for the display. I was exploring the option of using the same cluster to record the signals being written. It looks like this may not be the best approach tho.

many thanks again 

[TrottM]

Hey 

I may have misunderstood what your doing but could you not just log the data that you are wiring into the DAQ task. This should be what is outputting, obviously some error from ADC step sizing, but is that not what you want to be logging?

This is simple enough to do using the the file I/O vi's in the programming pallete.