Analyzer Devices - 5.3.4.3 AnalyserChannel_OperatingModeSubStateMachineType States

5.3.4.3 AnalyserChannel_OperatingModeSubStateMachineType States

Table 74 specifies the AnalyserChannel_OperatingModeSubStateMachineType’s State Objects. These State Objects are instances of the StateType defined in [OPC 10000-5]. Each State is assigned a unique StateNumber value. Subtypes of the AnalyserChannel_OperatingModeSubStateMachineType can add References from any state to a subordinate or nested StateMachine Object to extend the FiniteStateMachine.

A standard set of states are defined for the AnalyserChannel_OperatingModeSubStateMachineType. These states represent the operational condition of the AnalyserChannel in Operating mode. All AnalyserChannels that contain an AnalyserChannel_OperatingModeSubStateMachineType must support this base set. A device may or may not require a Client action to cause the state to change. See Table 73 for the description of the states.

Table 73 – AnalyserChannel_OperatingModeSubStateMachineType State Descriptions

State No.	StateName	Description
1	Clearing	Initiated by Clear Method call, this state clears faults that may have occurred when Aborting and are present in the Aborted state before proceeding to a Stopped state. This state guarantees that the Client will see fault signals before going back to Stopped state.
2	Stopped	This is the initial state after AnalyserDeviceStateMachine state Powerup. At this point: All communications with other systems are functioning (If applicable). The state machine waits for a Reset or SetConfiguration Method call.
3	Starting	The analyser has received the Start or StartSingleAcquisition Method call and it is preparing to enter in Execute state. At this point: The analyser system shall be ready to start. Prepare the system for continuous acquisition. When completed, the state machine automatically goes in Execute state.
4	Idle	At the beginning of this state: The Resetting state is completed All Parameters have been committed All analyser components are warmed-up and ready to start acquisition Waiting for Start or StartSingleAcquisition Method call
5	Suspended	The analyser or channel may be running but no results are being generated while the analyser or channel is waiting for external process conditions to return to normal. When the offending process conditions return to normal, the Suspended state will transition to Unsuspending and hence continue towards the normal Execute state. At this state, no acquisition cycle is performed. Note: The Suspended state can be reached as a result of abnormal external process conditions and differs from Held in that Held is typically a result of an operator request or an automatically detected analyser or channel fault condition that should be corrected before an operator request to transition to the Unholding state will be processed.
6	Execute	All repetitive acquisition cycles are done in this state: Wait for trigger Grab sample from process Prepare the sample for analysis Analyse the sample Publish results Cleanup sampling system for next acquisition cycle See AnalyserChannel_OperatingModeExecuteSubStateMachine for more details.
7	Stopping	Initiated by a Stop Method call, this state: Complete the ongoing acquisition if not too long Get the actual acquisition (partial acquisition) Discontinue the ongoing acquisition if partial acquisition does not make sense Go to safe states gently, no rush Transitions automatically to Aborted state.
8	Aborting	The Aborting state can be entered at any time in response to the Abort command or on the occurrence of a machine fault. The aborting logic will bring the device to a rapid safe stop. Operation of an Emergency Stop may cause the machine to be tripped by its safety system and may provide a signal to initiate the Aborting State.This state may include: Abandoning the ongoing acquisition data Rapidly putting the analyser system in safe states Cooling down sampling cell Closing cleaning solvent line Closing sample inputs Turning off Raman laser Turning off source All error conditions are saved and exposed in the AnalyserDevice/Channel.Status FunctionalGroup. Transitions automatically to Aborted state.
9	Aborted	This state maintains machine status information relevant to the Abort condition. The analyser is in safe state and: Protects user and equipment All error conditions are saved and exposed in the AnalyserDevice/Channel.Status FunctionalGroup. The analyser can only exit the Aborted state after an explicit Clear Method call, often after manual intervention to correct and reset the detected device fault.
10	Holding	When the analyser or channel is in the Execute state, the Hold command can be used to start Holding logic which brings the analyser or channel to a controlled stop or to a state which represents Held for the particular unit control mode. An analyser or channel can go into this state either when an internal equipment fault is automatically detected or by an operator command. The Hold command offers the operator a safe way to intervene manually in the process (such as replacing solvent container) and restarting execution when conditions are safe.
11	Held	The Held state holds the analyser or channel's operation. At this state, no acquisition cycle is performed.
12	Unholding	The Unholding state is a response to an operator command to resume the Execute state. Issuing the Unhold Method call will prepare the analyser or channel to re-enter the normal Execute state. The actions of this state may include: Heating-up accessories Reinitiating sampling system Note that an operator Unhold command is always required and Unholding can never be initiated automatically.
13	Suspending	This state is a result of a change in monitored conditions due to process conditions or factors. The trigger event will cause a temporary suspension of the Execute state. Suspending is typically the result of starvation of the process to analyse or or issues with the sampling system that prevents the analyser or channel from continued Execution. During the controlled sequence of Suspending the analyser or channel will transition to a Suspended state. The Suspending state might be forced by the operator using the Suspend Method call.
14	Unsuspending	This state is a result of a device request from Suspended state to transition back to the Execute state by calling the Unsuspend Method. The actions of this state may include: Heating-up accessories Reinitiating sampling system This state is entered prior to the Execute state, and prepares the analyser or channel for the Execute state.
15	Resetting	This state is the result of a Reset or SetConfiguration Method call from the Stopped state. The Parameters are committed at this state. The actions of this state may include: Resetting Hardware Analyser warm up Enabling sampling sub-system Enabling cleaning sampling path Turning on source Heating-up liquid cell When completed, the state machine goes automatically to the Idle state.
16	Completing	This state is an automatic or commanded exit from the Execute state. Normal operation has run to completion, i.e. the requested number of samples has been analysed. At this point, the pre-configured acquisition cycle(s) are completed. The actions of this state may include: Flushing data path Completing sample cells cleaning state Going to safe states When done, it automatically transitions to the Complete state.
17	Complete	At this point, the Completing state is done and it transitions automatically to Stopped state to wait. From an analyser point of view, this is almost a transient state.

Table 74 – AnalyserChannel_OperatingModeSubStateMachineType States

BrowseName	References	Target BrowseName	Value	Target Type Definition	Notes
States
Stopped	HasProperty	StateNumber	2	PropertyType
	FromTransition	CompleteToStoppedTransition		TransitionType	Method
	FromTransition	StoppingToStoppedTransition		TransitionType	Method
	FromTransition	ClearingToStoppedTransition		TransitionType	Method
	ToTransition	StoppedToResettingTransition		TransitionType	Method
	ToTransition	StoppedToAbortingTransition		TransitionType	Method

Resetting	HasProperty	StateNumber	15	PropertyType
	FromTransition	StoppedToResettingTransition		TransitionType	Method
	ToTransition	ResettingToIdleTransition		TransitionType	Method
	ToTransition	ResettingToStoppingTransition		TransitionType	Method
	ToTransition	ResettingToAbortingTransition		TransitionType	Method

Idle	HasProperty	StateNumber	4	PropertyType
	FromTransition	ResettingToIdleTransition		TransitionType	Method
	ToTransition	IdleToStartingTransition		TransitionType	Method
	ToTransition	idleToStoppingTransition		TransitionType	Method
	ToTransition	IdleToAbortingTransition		TransitionType	Method

Starting	HasProperty	StateNumber	3	PropertyType
	FromTransition	IdleToStartingTransition		TransitionType	Method
	ToTransition	StartingToExecuteTransition		TransitionType	Method
	ToTransition	StartingToStoppingTransition		TransitionType	Method
	ToTransition	StartingToAbortingTransition		TransitionType	Method

Execute	HasProperty	StateNumber	6	PropertyType
	FromTransition	StartingToExecuteTransition		TransitionType	Method
	ToTransition	ExecuteToCompletingTransition		TransitionType	Method
	ToTransition	ExecuteToStoppingTransition		TransitionType	Method
	ToTransition	ExecuteToAbortingTransition		TransitionType	Method

Completing	HasProperty	StateNumber	16	PropertyType
	FromTransition	ExecuteToCompletingTransition		TransitionType	Method
	ToTransition	CompletingToCompleteTransition		TransitionType	Method
	ToTransition	CompletingToStoppingTransition		TransitionType	Method
	ToTransition	CompletingToAbortingTransition		TransitionType	Method

Complete	HasProperty	StateNumber	17	PropertyType
	FromTransition	CompletingToCompleteTransition		TransitionType	Method
	ToTransition	CompleteToStoppedTransition		TransitionType	Method
	ToTransition	CompleteToStoppingTransition		TransitionType	Method
	ToTransition	CompleteToAbortingTransition		TransitionType	Method

Suspending	HasProperty	StateNumber	13	PropertyType
	FromTransition	ExecuteToSuspendingTransition		TransitionType	Method
	ToTransition	SuspendingToSuspendedTransition		TransitionType	Method
	ToTransition	SuspendingToStoppingTransition		TransitionType	Method
	ToTransition	SuspendingToAbortingTransition		TransitionType	Method

Suspended	HasProperty	StateNumber	5	PropertyType
	FromTransition	SuspendingToSuspendedTransition		TransitionType	Method
	ToTransition	SuspendedToUnsuspendingTransition		TransitionType	Method
	ToTransition	SuspendedToStoppingTransition		TransitionType	Method
	ToTransition	SuspendiedToAbortingTransition		TransitionType	Method

Unsuspending	HasProperty	StateNumber	14	PropertyType
	FromTransition	SuspendedToUnsuppendingTransition		TransitionType	Method
	ToTransition	UnsuppendingToExecuteTransition		TransitionType	Method
	ToTransition	UnsuppendingToSuspendingTransition		TransitionType	Method
	ToTransition	UnsuppendingToStoppingTransition		TransitionType	Method
	ToTransition	UnsuppendingToAbortingTransition		TransitionType	Method

Holding	HasProperty	StateNumber	10	PropertyType
	FromTransition	ExecuteToHoldingTransition		TransitionType	Method
	ToTransition	HoldingToHeldTransition		TransitionType	Method
	ToTransition	HoldingToStoppingTransition		TransitionType	Method
	ToTransition	HoldingToAbortingTransition		TransitionType	Method

Held	HasProperty	StateNumber	11	PropertyType
	FromTransition	HoldingToHeldTransition		TransitionType	Method
	ToTransition	HeldToUnholdingTransition		TransitionType	Method
	ToTransition	HeldToStoppingTransition		TransitionType	Method
	ToTransition	HeldToAbortingTransition		TransitionType	Method

Unholding	HasProperty	StateNumber	12	PropertyType
	FromTransition	HeldToUnholdingTransition		TransitionType	Method
	ToTransition	UnholdingToExecuteTransition		TransitionType	Method
	ToTransition	UnholdingToHoldingTransition		TransitionType	Method
	ToTransition	UnholdingToStoppingTransition		TransitionType	Method
	ToTransition	UnholdingToAbortingTransition		TransitionType	Method

Stopping	HasProperty	StateNumber	7	PropertyType
	FromTransition	ResettingToStoppingTransition		TransitionType	Method
	FromTransition	IdleToStoppingTransition		TransitionType	Method
	FromTransition	StartingToStoppingTransition		TransitionType	Method
	FromTransition	ExecuteToStoppingTransition		TransitionType	Method
	FromTransition	CompletingToStoppingTransition		TransitionType	Method
	FromTransition	CompleteToStoppingTransition		TransitionType	Method
	FromTransition	SuspendingToStoppingTransition		TransitionType	Method
	FromTransition	SuspendedToStoppingTransition		TransitionType	Method
	FromTransition	UnsuspendingToStoppingTransition		TransitionType	Method
	FromTransition	HoldingToStoppingTransition		TransitionType	Method
	FromTransition	HeldToStoppingTransition		TransitionType	Method
	ToTransition	StoppingToStoppedTransition		TransitionType	Method
	ToTransition	StoppingToAbortingTransition		TransitionType	Method

Aborting	HasProperty	StateNumber	8	PropertyType
	FromTransition	StoppingToAbortingTransition		TransitionType	Method
	FromTransition	StoppedToAbortingTransition		TransitionType	Method
	FromTransition	ResettingToAbortingTransition		TransitionType	Method
	FromTransition	IdleToAbortingTransition		TransitionType	Method
	FromTransition	StartingToAbortingTransition		TransitionType	Method
	FromTransition	ExecuteToAbortingTransition		TransitionType	Method
	FromTransition	CompletingToAbortingTransition		TransitionType	Method
	FromTransition	CompleteToAbortingTransition		TransitionType	Method
	FromTransition	SuspendingToAbortingTransition		TransitionType	Method
	FromTransition	SuspendedToAbortingTransition		TransitionType	Method
	FromTransition	UnsuspendingToAbortingTransition		TransitionType	Method
	FromTransition	HoldingToAbortingTransition		TransitionType	Method
	FromTransition	HelpToAbortingTransition		TransitionType	Method
	FromTransition	UnholdingToAbortingTransition		TransitionType	Method
	ToTransition	AbortingToAbortedTransition		TransitionType	Method

Aborted	HasProperty	StateNumber	9	PropertyType
	FromTransition	AbortingToAbortedTransition		TransitionType	Method
	ToTransition	AbortedToClearingTransition		TransitionType	Method

Clearing	HasProperty	StateNumber	1	PropertyType
	FromTransition	AbortedToClearingTransition		TransitionType	Method
	ToTransition	ClearingToStoppedTransition		TransitionType	Method

The set of states defined to describe in AnalyserChannel_OperatingModeSubStateMachineType can be expanded. Sub-states can be defined for the base states to provide more resolution to the process and to describe the cause and effects of additional stimuli and transitions. For example, the “Stopped” state can include the sub states “Preparing” and “Done” to indicate if the function is still preparing the device or if it has completed preparation