# Value connection (latchedButton)

When you open a display containing a latched push button, the application reads the Value connection to determine its current state.

When the operator presses the Latched Push button, the application writes the value corresponding to the latched state (State 1) to the tag’s data source, (unless the latchResetType attribute is nonZeroValue and the Handshake connection is currently a non-zero value). When the Handshake connection unlatches the button, the application sends the value corresponding to the unlatched state (State 0) to the Value connection.

A read-write connection. Assign a tag to this connection. To provide visual feedback that the Value connection has been read by the data source, assign different tags to the Value and Indicator connections. Configure the data source to pass the Value connection’s value to the Indicator connection.

The latchedButton graphic object element's connections element contains this connection.

## See also

connections and connection elements

latchResetType attribute

Handshake connection

Indicator connection