my DAQ VI is not working after i edit it with formula

[Dennis_Knutson]

That statement does not mean anything to me. As I said, your program will plot only a single point from each channel to the chart. If you want to plot multiple points, then you need to use a loop. If you need to pass multiple points to your formula, you need to build an array with each iteration of the loop.

[danpullo]

Please can someone help me with Data collection.i have my results in the form of signal.The voltage is ac signal and i want to use it and calculate resistance after that, collect the data after 30 minutes and plot the data with time.

i attached the Vi of my simulation

thanks

am waiting

[Dennis_Knutson]

And what exactly is your question? While your use of the square wave does not make much sense, the VI seems to be working the way you've described.

[danpullo]

Yes the VI is working?

but i was thinking i can have Data that maybe saved in a format that i can extract and plot later and analyse.i will like to know if i can get the data saved and can be open with other program like notepad or so.what am having now is online monitoring of the data. Hope i made myself clear if not please let me know.

thanks and am waiting.Or do you have any suggestion on how to display the data other that this.i tried also to used the plot with the square grid but it doesnt show anything on the plot.

Thanks

[Dennis_Knutson]

Well, I also said your use of the square wave does not make much sense. You are getting the same value over and over again.

In any case, you can just use a Write to Measurement File function.