JobStartedEventType is an EventType subtype of BaseEventType, defined in OPC 10000-5. This event is to be triggered by the server when the state machine transitions from the Ready state to the SingleExecution or ContinuousExecution state. Figure 28 defines the structure. It is formally defined in Table 110.

It indicates to the client that the vision system has started the execution of a job, regardless whether the transition occurred due to a call to the StartSingleJob or StartContinuous method or automatically due, e.g. for a fieldbus start signal.

The event transports the jobId created upon the transition from state Ready to state SingleExecution or ContinuousExecution. This enables clients to maintain a time-sequential log of jobs, regardless whether this particular client started the job or whether the job was started by an OPC UA method call at all.

In the case of multiple running state machines in the same server, the client can use the Source property inherited from BaseEventType to identify the state machine instance the event originated from.

Figure 28 – Overview JobStartedEventType

Table 110 – Definition of JobStartedEventType

Attribute	Value
BrowseName	JobStartedEventType
IsAbstract	False
References	NodeClass	BrowseName	DataType	TypeDefinition	ModellingRule
Subtype of the BaseEventType defined in OPC 10000-5
HasProperty	Variable	JobId	JobIdDataType	PropertyType	Mandatory