Checking a state diagram
• Right-click the diagram, and select > .
The report is generated to the Output pane.
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Errors indicate that state machine code generated by ACS may not work.
Warnings indicate that state machine code generated by ACS may not work as expected.
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Modeler makes the following checks:
Composite State Checks
• Contains at least one Simple, Sequential or Concurrent substate (C30010).
• Contains not more than one Initial State (C30011).
• Contains not more than one History State of type deep history (C30012).
• Contains not more than one History State of type shallow history (C30013).
• Compartment States do not own Event Action Blocks (C30074).
Concurrent State Checks
• Each concurrent compartment except the one entered must have an Initial State (C30063).
Initial State Checks
• The State Diagram must have at least one Initial State (C30071). If a State Diagram has multiple Initial States, a warning is given.
• Must have at least one outgoing transition to a State in either the same region or a sub-region (C30016).
• When an Initial State has multiple outgoing Transitions, each Transition must have a Guard Condition (C30019).
• When an Initial State has multiple outgoing Transitions, one Transition should use the 'else' keyword to ensure that there is always a valid Transition (C30020).
• When an Initial State has an outgoing Transition, it must have no trigger (C30023).
Event Action Block Checks
• If the Trigger Type is Signal, the Even Action Block must be associated with an Event (C30073).
• If the Trigger Type is Call, the Even Action Block must be associated with an Operation (C30072).
Final State Checks
• When contained by a Sequential or Concurrent State, the Sequential or Concurrent State must have an outgoing Transition whose Trigger Type is <none> (C30028).
• The source State of a Transition triggered by a completion trigger must be a Sequential or Concurrent State that contains a Final State (C30032).
• Incoming transitions must be from states in the same region, or a sub-region only (C30025).
History State Checks
• A History State must have at least one incoming transition (C30095).
• Outgoing transitions are to States in the same region (C30031).
• If the History State has incoming transitions from Initial States, it must have an outgoing Transition (C30032).
• An outgoing transition from a history state must not have a trigger or guard condition (C30058).
Fork State Checks
• A Fork State must have at least one incoming Transition and two or more outgoing Transitions (C30076).
• Each outgoing Transition is to a State in a different concurrent region or to a Synch State owned by the parent Concurrent State (C30036).
• Each outgoing Transition has no Guard Condition (C30042).
• Each outgoing Transition is to a Simple, Sequential or Concurrent State (C30040).
Join State Checks
• A Fork State must have at least one outgoing Transition and two or more incoming Transitions (C30075).
• Each incoming Transition is from a State in a different concurrent region of the Concurrent State, or from a Synch State owned by the parent Concurrent State (C30037).
• Each incoming Transition has no Guard Condition and a Trigger Type of <none> (C30043).
• Each incoming Transition is from a Simple, Sequential or Concurrent State (C30041).
Junction State Checks
• Has at least one incoming transition and one outgoing transition (C30054).
• Outgoing Transitions must not be triggered by a Call, Signal, Time or Change Trigger type (C30055).
• When a Junction State has multiple outgoing Transitions, each Transition has a Guard Condition (C30056).
• Transitions between Junctions do not form a cycle without passing through a Simple, Sequential or Concurrent State (C30057).
Transition Checks
• When a Transition uses the Guard Condition 'Else', at least one other Transition must originate from its source object (C30060).
• When a Transition uses the Guard Condition 'Else', no other Transitions from its source object must use the Guard Condition 'Else' (C30059).
• When a Transition goes to the boundary of a Sequential State, that State must contain an Initial State (C30061).
• When a Transition goes to an Atomic State that is the parent of a State Diagram, that State's State Diagram must contain an Initial State (C30061).
• When a Transition goes to the boundary of a Concurrent State, each region of that State must contain an Initial State (C30062).
• When a Transition goes from one Concurrent region to another Concurrent region, the Concurrent regions other than the target region of the Transition must contain an Initial State (C30063).