How to read data from measurement file using express VI continuously?

[James.M]

The Express VI has no way of resetting that pointer, so you would need to use the native File IO VIs to get the data over and over. Try the Read from Spreasheet VI.

[crossrulz]

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@fatin wrote:

Nope. I want to read it continuosly. Is that possible in one graph?

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How often is your file going to change?  In theory, it should never change.  So just read the file once and pass the read signal into a loop.  Inside is just a Waveform CHART.  A chart has a history as well instead of just showing the last thing that was wired to it, like the graph.  So the chart just keeps appending the same waveform until you tell it to stop.  I also recommend some kind of wait inside of that loop.

[Dennis_Knutson]

Please pay attention. There is absolutely no need to read the file more than once. Just silly to ask that. The data can be displayed continuously and that sort of basics is what you should be focusing on.

Since this is homework, I hope no one gives you a complete solution but investigate the Index Array.

[FNI_49]

Thanks Mr. James. I alsi think i can't used express vi to make this work. I will try your this way.

Fatin 😉

[FNI_49]

Thanks Mr.Dennis. I will try hard to investigate as u said.

[FNI_49]

Thanks!. I have dine this before. But i don't know still why my lecturer ask this question iver and over again. Hope i can get this but maybe noy from using express vi?