Element: Realization A Realization is a UML relationship which expresses instantiation. The realizing class object implements the attributes and operations of the interface. In IEC code, this relation

Element: Generalization A Generalization is a UML relationship that expresses inheritance or specialization. The inheriting element has the attributes and operations of the root element. In IEC code,

Statechart Elements The elements of the statechart are available in the ToolBox view. This view opens when you open a statechart object in the editor. Start state End state State State (in-cycle) Note

Element: Start state The Start state element represents a pseudo state for an initial state. If the state is at the top level, then the statechart flow starts from there. If it is in a composite state

Element: End state An end state is a pseudo state. It indicates that the execution of the area that contains this end state has ended. End states can be located in a statechart at the top level, in co

Element: State A state is the main element of a statechart. A state machine (or statechart) runs through various states during its runtime and executes their actions. A state can have ENTRY, DO, and E

Element: Composite state You can use this element to group multiple states together. . A composite state can be orthogonal or non-orthogonal. Orthogonal state: Composite state with two or more regions

Element: Fork/Join The fork is a pseudo state to split transitions to pseudo-parallel processing in orthogonal states. All transitions that originate from a fork are completion transitions that have t

Element: Choice A choice is a node in a statechart. The subsequent guard conditions are evaluated at the node within a cycle. It has at least one incoming transition and one outgoing transition. Choic

Element: Transition A transition controls the transition behavior between states. . A transition is possible when one of the following events occurs: Conditional event or change event Completion event