# Set up connections for the numeric display (Connections tab)

## To set up tags and expressions for the numeric display

1. In the Graphics Display editor, double-click the display to open its Properties dialog box.
2. Click the Connections tab.
3. Assign a tag or expression to these connections:

   Value

   You can assign a tag or an expression to this connection. The application reads the value of the Value connection’s tag at the data source and displays this value in the numeric display.

   If you assign an expression to this connection, the application calculates the value of the expression and shows the result in the numeric display.

   Polarity

   You can assign a tag or an expression to this connection. This connection determines whether or not a minus sign is shown. A minus sign is shown when this connection has a positive non-zero value. If this connection is assigned, it overrides the polarity of the Value connection’s value.

   If you assign an expression to this connection, the application calculates the value of the expression and uses the result to determine whether to display a minus sign.

   If the Polarity connection uses a tag with a floating point address, values less than .5 will be rounded down and values greater than or equal to .5 will be rounded up.

## See also

Create numeric displays

How the numeric display works at run time

Columns on the Connections tab of a graphic object's Properties dialog box