# Set up connections for the control list selector (Connections tab)

## To set up tags and expressions for the control list selector

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

   Value

   Assign a tag to this connection. When the operator selects a state, the application writes the value corresponding to the selected state to the tag’s data source. The application also monitors this connection and if the value changes, highlights the new state in the list.

   The Value connection triggers the state's action. For example, when the tag assigned to the connection changes to a new state, the data source changes a motor's speed to a new setting.

   Tip: | If Write on enter is selected (on the General tab), the application does not write to the Value connection until the operator selects a state and presses Enter. If Write on enter is not selected (in the General tab), the application writes to the Value connection as soon as a state is selected. The Enter and Enter Handshake connections are ignored. Enter This connection accepts values of 0 and 1 only. The connection determines how long the Enter key press is registered. Use this connection for Enter key handshaking. Enter Handshake You can assign a tag or an expression to this connection. This connection resets the Enter connection, using the Handshake reset type property specified in the Timing tab. Use this connection for Enter key handshaking if you want the Enter connection to be reset when a value at the data source changes. If you assign an expression, the application calculates the value of the expression and resets the Enter connection when the expression value meets the conditions of the Handshake reset type option.

## See also

Create control list selectors

Configure the control list selector

Set up states for the control list selector

Set up handshaking for the control list selector

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