An instance of this type provides a drop-down list (a JComboBox) consisting of the elements of an enumerated
data type as defined in IEC
61131-3. The data type name of the enumerated data type is
specified by the
input, and the initial value displayed is the specified initial
value for the data type.
When an element is selected from the drop-down list, an
event occurs with the enumerated value of the
output corresponding to the selected element from the drop-down
The interactions between the application and the JComboBox are represented by the service sequences shown below.