5 Stacklights

5.2 OPC UA ObjectTypes

5.2.2 StacklightType

Figure 2 StacklightType overview

The StacklightType is a subtype of the BasicStacklightType. It adds the possibility to show the stacklight’s health status. In Figure 2, a graphical overview is given. It is formally defined in Table 11.

Table 11 – StacklightType Definition

Attribute	Value
BrowseName	StacklightType
IsAbstract	False
Description	Entry point to a stacklight with the possibility to show the stacklight’s health status.
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of the BasicStacklightType defined in 5.2.1, i.e. inheriting the InstanceDeclarations of that Node.
0:HasInterface	ObjectType	2:IDeviceHealthType
Properties of the 2:IDeviceHealthType
0:HasComponent	Variable	2:DeviceHealth	2:DeviceHealthEnumeration	0:BaseDataVariableType	O
0:HasComponent	Object	2:DeviceHealthAlarms		0:FolderType	O

DeviceHealth, defined in IDeviceHealthType, indicates the health status of the stacklight and shall be used as specified in OPC 10000-100.

DeviceHealthAlarms, defined in IDeviceHealthType, can be used to expose alarm instances and shall be used as specified in OPC 10000-100.

The InstanceDeclarations of the StacklightType have the Attribute values defined in Table 12.

Table 12 – StacklightType Attribute values for child Nodes

Source Path	Value	Description
2:DeviceHealth	-	Contains the health status information of the stacklight.
2:DeviceHealthAlarms	-	Contains alarms of the stacklights providing more detailed information on the health of the stacklight.