Displaying error message when waveform graph isn't receiving data.

[22119823]

I am sending data with UDP from one VI to another. How can I display an error message when my waveform graph isn't receiving any data (If I stop sending data to the waveform graph)?

[GerdW]

Hi new number,

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@22119823 wrote:

How can I display an error message when my waveform graph isn't receiving any data (If I stop sending data to the waveform graph)?

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When there is no data for your graph then there is an error upstream.

Just react on that error to show the dialog!

[22119823]

Thanks for the reply. When I stop sending data there is still the data or number that was last sent. Is there a function that recognizes that the data is standing still?

[22119823]

So there actually is data but it's not "moving" or "updating". 

[GerdW]

Hi number,

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@22119823 wrote:

When I stop sending data there is still the data or number that was last sent.

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Now it's time to show your code?

How is there "still data" when you stop sending data?

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@22119823 wrote:

Is there a function that recognizes that the data is standing still?

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Yes, sure. But when handling errors/conditions upstream you don't need to detect "unchanged" data…

Generic recommendations:

When there is a problem in YOUR code then you should attach YOUR code.

Attach real code: we cannot debug/edit images in LabVIEW!

[22119823]

Translation for my VIs:

UDP_Sprejemanje=UDP_Receiving

UDP_Pošiljanje=UDP_Sending

So in UDP that is receiving I want to display an error message if I stop sending data from the other VI.

[pincpanter · Accepted solution]

I cannot open your vi because I don't have LV2020, however I guess you can manage the Timeout error from the UDP Read function.

Can't you?

[22119823]

Thank you!

[GerdW]

Hi number,

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@22119823 wrote:

So in UDP that is receiving I want to display an error message if I stop sending data from the other VI.

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As I said before: handle the upstream error!