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Complete the following steps to create a VI that takes a number representing degrees Celsius and converts it to a numberrepresenting degrees Fahrenheit.
Window>>Tile Left and Right to
display the front panel and block diagram side by side or
Window>>Tile Up and Down to display the front panel and
block diagram stacked.Controls>>Numeric Controls to display the
Numeric Controls palette.
If the
Controls palette is not visible,
right-click an open space on the front panel workspace todisplay it.Numeric Control . Move the
control to the front panel and click to place thecontrol.deg C in the label of the control and press
the
<Enter> key or click the
Enter button, shown in
,
on the toolbar. If you do not type the name immediately,LabVIEW uses a default label.Labeling tool, or
right-clicking and selecting
Properties from
the shortcut menu to display the property dialog box.Numeric Indicator located on
the
Controls>>Numeric Indicators palette.deg F in the label and press the
<Enter> key or click the
Enter button.Window>> Show Block Diagram .
LabVIEW creates corresponding control and indicatorterminal icons on the block diagram when you place
controls and indicators on the front panel. Theterminals represent the data type of the control or
indicator. You should see two double-precision,floating-point terminals on the block diagram, one
indicator, and one control.
Multiply function, located on the
Functions>>Arithmetic&Comparison>>Express
Numeric palette, on the block diagram to the right of
the
deg C indicator. If the
Functions palette is not visible, right-click
an open space on the block diagram workspace to display it.Add function, located on the
Functions>>Arithmetic&Comparison>>Express Numeric palette, on the block diagram to the right of the
Multiply function.Numeric Constant , located on the
Functions>>Arithmetic&Comparison>>Express Numeric palette, to the lower left of the
Multiply function. Type
1.80 in
the constant. When you first place a numeric constant, it ishighlighted so you can type a value. If the constant is no
longer highlighted, double-click the constant to activatethe
Labeling tool.Numeric Constant , located on the
Functions>>Arithmetic&Comparison>>Express
Numeric palette, to the left of the
Add function. Type
32.0 in the constant.Wiring tool, shown in
, to wire the icons as shown in
.
Wiring tool to click the first terminal,
move the tool to the second terminal, and click thesecond terminal. You can start wiring at either
terminal.spacebar to toggle the
wire direction.Multiply and
Add functions
and select
Visible Items>>Terminals from
the shortcut menu to display the connector pane on theblock diagram. Return to the icons after wiring by
right-clicking the functions and selecting
Visible Items>>Terminals from the shortcut menu
to remove the checkmark.Wiring tool over a
terminal, the terminal area blinks, indicating thatclicking will connect the wire to that terminal and atip strip appears, displaying the name of the
terminal. If the
Context Help window is
open, the terminal area also blinks in the
Context Help window.<Esc> key, right-click, or click the
terminal where you started the wire.Window>>Show Front Panel .Convert C to F.vi in the
C:\Exercises\LabVIEW Basics I directory.Operating tool, shown in
, or the
Labeling tool to
double-click the numeric control and type a new number.Run button, shown at left, to run the VI.Edit Icon from the shortcut menu.
The
Icon Editor dialog box appears.Select tool, shown in
, on the left side of the
Icon Editor dialog box to select the default icon.<Delete> key to remove the default
icon.Rectangle tool, shown in
, to redraw the border.Text tool, shown in
, and change the font to
Small
Fonts .Text tool to click the editing area
where you will begin typing.C and
F . While the
text is active, you can move the text by pressing thearrow keys.Pencil tool,
shown in
, to create the arrow.
<Shift> key while you use the
Pencil tool to drag the cursor.Select tool and the arrow keys to
move the text and arrow you created.B&W icon and click the
256 Colors button in the
Copy from section to create a black and white icon, which
LabVIEW uses for printing unless you have a colorprinter.16 Colors icon and click the
256 Colors button in the
Copy from section.OK button to close the
Icon Editor dialog
box. The icon appears in the upper right corner of thefront panel and block diagram.Show Connector from the shortcut menu to define the
connector pane terminal pattern. LabVIEW selects a defaultconnector pane pattern based on the number of controls and
indicators on the front panel. For example, this front panelhas two terminals,
deg C and
deg F , so LabVIEW selects a connector pane pattern with
two terminals, shown in
.Help>>Show Context Help to display
the
Context Help window.Wiring tool, and the terminal turns
black.deg C control. A marquee
highlights the control on the front panel.deg F indicator.Context Help window shows that both terminals
are connected to double-precision, floating-pointvalues.
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