4.2 Pop-up graph vi and use pop-up graph vi

Front panel

Open a blank VI and build the following front panel.

• The indicator to the right of the thermometer is a digital display belonging to thethermometer. Right-click the thermometer and select Visible Items>>Digital Display from the shortcut menu to display the digital value.
• Change # of data values to signed 32-bit integer (I32) representation.

Block diagram

• Build the following block diagram.
  • Place the Thermometer VI from a previous exercise on the block diagram. This VI acquires the current temperaturevalue.
  • Place the Wait Until Next ms Multiple function, located on the Functions>>All Functions>>Time&Dialog palette, on the block diagram. Right-click the input, select Create>>Constant , and type 500 in the constant to cause the For Loop to execute every 500 ms.
  • Place the Multiply function, located on the Functions>>Arithmetic&Comparison>>Express Numeric palette, on the block diagram. This function multiplies eachelement of the output array by 0.50 to scale the $x$ values to represent the time interval at which the VI takes themeasurements.
  • Place the Pop-up Graph VI, located in the C:\Exercises\LabVIEW Basics I directory, on the block diagram. This VI plots the temperature data on an XY graph.
  • Complete the block diagram as shown in the previous figure.
• Save the VI as Use Pop-up Graph.vi in the C:\Exercises\LabVIEW Basics I directory.
• Configure the subVI to display its front panel when called.
  • Double-click the Pop-up Graph subVI to open its front panel.
  • Select File>>VI Properties .
  • Select Window Appearance from the Category pull-down menu.
  • Click the Customize button. Configure the window appearance as shown in the dialog box .

  • Click the OK button twice and save and close the subVI. If the front panel is not closed,it will not close after the subVI runs.
• Run the Use Pop-up Graph VI. After the VI acquires 10 seconds of temperature data, the front panelof the Pop-up Graph VI displays and plots the temperature data. Click the DONE button to return to the calling VI.
• Change the window appearance settings for the Pop-up Graph subVI to the Dialog window style.
• Save and close the subVI.
• Run the Use Pop-up Graph VI again. The Pop-up Graph subVI front panel window behaves as a dialog box. For example, the window stayson top of all other windows and uses the system colors.
• Close all open VIs.