# How the Numeric Input Enable button works at run time

When the operator presses the Numeric Input Enable button, the numeric pop-up keypad or scratchpad opens. The operator types a numeric value in the pop-up and presses Enter. The value is sent to the Value connection at the data source.

If a write expression is assigned, the application evaluates the expression and sends the expression value to the Value connection.

If the terminal resolution for the computer running the application is too small, the pop-up does not open:

- If the terminal's resolution is smaller than 124 pixels wide by 240 pixels high, the numeric pop-up keypad cannot open.
- If the terminal's resolution is smaller than 124 pixels wide by 68 pixels high, the numeric pop-up scratchpad cannot open.

## Ramp

If the button has input focus, you can press a Move Up Key button object or a cursor up key on an external keyboard or keypad to increase the Value connection by the ramp value, or press a Move Down Key button object or a cursor down key to decrease the Value connection by the ramp value.

Tip: | The button does not need to have input focus to call a pop-up. It does have to have input focus to perform the ramping function. If you want the button to have input focus when pressed, check the Take Focus on Press check box (General tab). Check the Key Navigation box (General tab) if you want the operator to be able to navigate to the button with the keyboard and give the button input focus.

## See also

Causes of run-time errors for the Numeric Input Enable button

Set up connections for the Numeric Input Enable button

How Enter key handshaking works at run time

Use the numeric pop-up keypad

Use the numeric pop-up scratchpad