ReadyEventType 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 to the Ready state from one of the “Execution” states, i.e. SingleExecution or ContinuousExecution. Figure 29 defines the structure. It is formally defined in Table 111.

It indicates to the client that the vision system has the necessary resources available for executing the next job. The client still has to make sure that the state machine is actually in the Ready state before calling the StartSingleJob or StartContinuous method as the vision system may fall out of the Ready state due to internal reasons or other method calls

The event transports the jobId created upon the transition from state Ready to state SingleExecution or ContinuousExecution. Together with the JobStarted event this enables clients to maintain a time-sequential log of state changes for each job.

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 29 – Overview ReadyEventType

Table 111 – Definition of ReadyEventType

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