show 30 different channels without getting the front panel too crowded

[jvzs]

What function should I use to receive the data of 30 channels without getting the front panel crowded? I´ve already done 30 controls simulating the multiplexer in the front panel, but how can I choose each channel in a way that the data from only this channel appear as I click in that control in the panel, and I can change that as I want during the acquisition.

[smercurio_fc]

A simple menu ring comes to mind. List the channels in the menu ring and then respond to the value change event.

[rpursley8]

I would add a check box for each control panel that when checked would make that channel visible in the waveform graph/chart that you are using to display that data.  Using the Active Plot property to select the channel and the Plot.Visible property to turn in on/off.

See attached in LV8.5

[unclebump]

There is a listbox example file that does this.

C:\Program Files\National Instruments\LabVIEW 8.5\examples\general\controls\listbox2.llb\Listbox to Select Multiple Waveforms Demo.vi

[altenbach]

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jvzs wrote:

 I´ve already done 30 controls simulating the multiplexer in the front panel, but how can I choose each channel in a way that the data from only this channel appear as I click in that control in the panel, and I can change that as I want during the acquisition.

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Instead of 30 controls, always use an array of controls. This often simplifies the code dramatically. For example, here's a quick rewrite of Randall Pursley's example above using arrays (LV 8.0). The code is about 10x simpler. 🙂