The WwEventsDispatcherType represents a container that is an event dispatcher for machine events and is formally defined in Table 27.
Table 27 – WwEventsDispatcherType Definiton
|
Attribute |
Value |
||||
|
BrowseName |
WwEventsDispatcherType |
||||
|
IsAbstract |
False |
||||
|
References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
|
Subtype of the BaseObjectType defined in OPC 10000-5 |
|||||
|
0:GeneratesEvent |
ObjectType |
0:BaseEventType |
|
|
|
|
0:GeneratesEvent |
ObjectType |
WwBaseEventType |
|
|
|
A wide variety of events and states can trigger messages on a plant, machine or component. Events and the associated messages are rather temporary and therefore cannot be subscribed directly.
The woodworking events shall implement the interface IWwEventMessageType. Therefore the WwBaseEventType can be used.
Figure 10 – Overview of Event Types
Woodworking machines do not need to provide the woodworking Types like WwBaseEventType. Instead it can be an object of any OPC UA 0:BaseEventType or a subtype of it and additionally can implement the interface IWwEventMessageType. So it is possible to use the full range of OPC UA AlarmTypes like 0:LimitAlarmType:
