6.3.7 PackMLMachineStateMachineType

The PackMLMachineStateMachineType defines the machine level state machine. It is illustrated in Figure 17.

The TR-88 specification does not define an initial State for this StateMachine, but typically the state machine uses Stopped State as an initial State. Annex B provides recommended display names for the various states.

Table 8 defines the PackMLMachineStateMachineType. StateTypes and TransitionTypes only exist in the type system, thus they do not have a modelling rule.

The AvailableTransitions and AvailableStates are optional variables in the FiniteStateMachine, but they are overridden in the PackMLMachineStateMachineType and are made Mandatory. The PackMLMachineStateMachineType does include a sub-state machine that provides sub-states for the Run State.

Stopped - The machine is powered and stationary after completing the STOPPING state. All communications with other systems are functioning (if applicable). The value of this StateType is 2

Stopping - This state executes the logic which brings the machine to a controlled stop as reflected by the STOPPED state. The value of this StateType is 7.

Clearing - Initiated by a state command to clear faults that may have occurred when ABORTING, and are present in the ABORTED state. The value of this StateType is 1.

Running – the State that allows the ExecuteState machine to become active, enabling sub-states provided by this StateMachine. The value of this StateType is 18.

ExecuteState – StateMachine that provides additional sub states.

Stop – A Method to trigger a change of state to Stopping. This will affect all sub-states in Run state. Defined in 6.7.7

Reset – A Method to trigger a change of state to Running, enabling all of the sub-states of Running and the respective Methods that they expose. Defined in 6.7.8

The transitions are defined in Table 9.