How to transfer waveform data to a sub vi

I am trying to see plots in a subvi when I want it. In my test, the waveform chart in the main VI displays multiple plots of channels as I expected, but the subvi only shows a single plot. Program attached.
I can simply convert the dynamic data to numeric 2D array to display multiple plots, but I will loss the time stamps which I really want to show in the plot as the one in the main program.
Thanks
Solved!
Go to Solution.

hrwang wrote:
Thanks. I tried to follow your instructions.
Actually you didn't.  You didn't create an indicator of waveform arrays to copy over to the subVI to be a control of Waveform Arrays.  See attached subVI that I modified.
However, it still shows one plot in the sub vi, and plot starts from time 0. The new program is attached.
That's because you created a 1-D array of doubles which means only 1 plot and no timing data
I think 2D array are needed to have multiple plots.
No.  A 1-D array of waveforms can be used for multiple plots.
I want to run the program for days, so it is convenient if I can see the date/time in the x axile, as the one in the main program, instead of starting from time 0. Dynamic type of data is complicated and I don't want to deal with its structure, that's why I use a waveform chart as control, hoping the whole information of dynamic data is transferred to subvi plot correctly. Apparently, it didn't work.
If you don't want to use dynamic data, then don't use the DAQ assistant.  The DAQ assistant is what is giving you the dynamic data.  I see you did to a conversion from DDT to a 1-D array of waveforms which is good.  Now you just need to send that 1-D waveform array to the subVI.  Because you used a 1-D array of doubles in the subVI, you have a conversion dot.
Any solutions?
thanks again. 
Attachments:
PlotMOD.vi ‏14 KB

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