The machine is expected to offer all current messages such as alarms, warnings and information over the interface. These errors and warnings shall be mapped to OPC UA event types accordingly.
Links to related chapters:
7.11 IWwEventMessageType InterfaceType Definition
7.12 WwEventCategoryEnumeration
7.13 WwMessageArgumentDataType
7.14 WwMessageArgumentValueDataType
7.15 WwBaseEventType ObjectType Definition
7.16 WwConditionType ObjectType Definition
7.17 WwAcknowledgeableConditionType ObjectType Definition