storing output into a array problem

[labview.edu]

Hi Dennis,

I noticed a wire comming from the left wall of the block (going to Input A), what exactly it is doing? also does it matter if we connect the daq output to Input A?

I will try you solution and let you know.

Thanks,

Sine

[labview.edu]

Hi Dennis,

I noticed a wire comming from the left wall of the block (going to Input A), what exactly it is doing? also does it matter if we connect the daq output to Input A?

I will try you solution and let you know.

Thanks,

Sine

[Dennis_Knutson]

That's a shift register and is a basic element in LabVIEW. And yes it matters if your wire the DAQ output to input A. Input A is earlier data. Input B is the latest data.

[labview.edu]

Thank you Dennis. Every thing seems to be working. I will do some testing and will let you know. Actually this VI is a part of the bigger system I am trying to design and being a novice, I could not have done it without your help.

Thanks,

Sine

[labview.edu]

Hi Dennis,

The solution is working only if I am acquiring 1 channel, I modified DAQ assistant to acquire 2 channels and the append signals VI is outputing only 1 channel to write.

Thanks,

Sine

[JeffL]

If using multiple channels, I think your best bet may be to convert from dynamic data with selecting 2D array of scalars with columns as channels. Then use the Insert into Array function. For some reason you cannot set up the old data as the top input array, so I just flipped it around to insert at the beginning of the array with the new stuff.

[GerdW]

this is continued/double posted here!

[labview.edu]

Hi Jeff,

I just saw your reply and tried it. Now the x column data is not empty. But the problem is, it now contains the row number and not the time data. How can I get the time column?

Thanks,

Sine

[Dennis_Knutson]

With Jeff's solution, he converted to a 2D DBL array so there is no time information to save.

[JeffL]

Dennis is correct. You may want to use the Convert from Dynamic Data and select the 1D array of waveforms instead. Then you can use the Index Array to retrieve the waveform data of a specific channel.