# Set up global connections - Display tab

## To set up global Display connections

1. In the Explorer window, double-click the Global Connections icon to open the editor.
2. In the Global Connections editor, click the Display tab.
3. If a maximum update rate has not been selected, in the Maximum update rate (seconds) box, select the maximum rate at which the data source will supply data to the global connections.
4. The first two connections are write connections for sending values from the application to the data source. Assign a tag to these connections:
   - Replace Display Number
   - Display Print Active
5. The second two connections are read connections for sending values from the data source to the application. Assign a tag or expression to these connections:
   - Remote Display Number
   - Remote Display Print
6. The next two connections are read connections for closing On Top displays. Assign a tag or an expression to these connections:
   - Close an On Top Display
   - Close All On Top Displays
7. The parameter connections are optional read connections to be used for displays that use parameters when they open. Assign a tag or expression to these connections:
   - Parameter file
   - Use Parameter List
   - Parameter Tag #1 to 10

     Tip: | To unassign a control, select the control in the Tag or Expression column and do one of the following: Press Backspace on your keyboard repeatedly to remove the assignment one character at a time. Double-click twice to highlight the text, and then press Delete or Backspace to remove the entire assignment at once. Do not assign an expression consisting of a constant to the Remote Display Number. If you do, the display whose number matches the constant opens and can never be closed or changed. If a remote display print is in progress, the application ignores subsequent print requests from the data source until the display print has been processed.

## Options

- Maximum update rate

  From the drop-down list, select the rate at which to update tag values from the data source.

- Columns
  - Connection

    This column shows the name of the connection.

  - Tag or expression

    Type the tag name or expression associated with the connection.

  - Tag button (...)

    Click this button to open the Tag Browser and choose a tag instead of typing the tag name in the Tag or Expression column.

  - Exprn button (...)

    Click this button to open the Expression editor and create an expression instead of typing the expression in the Tag or Expression column.

## See also

Set up global connections

Set up global connections - Date and Time tab

Global connections - Macro tab

Global connections - Backlight tab

Global connections - Memory tab

Causes of run-time errors for global connections

data source

Parameter file and parameter list