Devices - 5.7 DeviceType

5.7 DeviceType

This ObjectTypecan be used to define the structure of a Device. Figure 13shows the DeviceType. It is formally defined in Table 26.

Figure 13– DeviceType

Table 26– DeviceType definition

Attribute	Value
BrowseName	DeviceType
IsAbstract	True
References	NodeClass	BrowseName	DataType	TypeDefinition	ModellingRule
Subtype of the ComponentTypedefined in 5.6

HasInterface	ObjectType	ISupportInfoType		Defined in 5.5.3.
HasInterface	ObjectType	IDeviceHealthType		Defined in 5.5.3.

HasComponent	Object	<CPIdentifier>		ConnectionPointType	OptionalPlaceholder

HasProperty	Variable	SerialNumber	String	PropertyType	Mandatory
HasProperty	Variable	RevisionCounter	Int32	PropertyType	Mandatory
HasProperty	Variable	Manufacturer	LocalizedText	PropertyType	Mandatory
HasProperty	Variable	Model	LocalizedText	PropertyType	Mandatory
HasProperty	Variable	DeviceManual	String	PropertyType	Mandatory
HasProperty	Variable	DeviceRevision	String	PropertyType	Mandatory
HasProperty	Variable	SoftwareRevision	String	PropertyType	Mandatory
HasProperty	Variable	HardwareRevision	String	PropertyType	Mandatory
HasProperty	Variable	DeviceClass	String	PropertyType	Optional
HasProperty	Variable	ManufacturerUri	String	PropertyType	Optional
HasProperty	Variable	ProductCode	String	PropertyType	Optional
HasProperty	Variable	ProductInstanceUri	String	PropertyType	Optional

Applied from IDeviceHealthType
HasComponent	Variable	DeviceHealth	DeviceHealthEnumeration	BaseDataVariableType	Optional
HasComponent	Object	DeviceHealthAlarms		FolderType	Optional

Applied from ISupportInfoType
HasComponent	Object	DeviceTypeImage		FolderType	Optional
HasComponent	Object	Documentation		FolderType	Optional
HasComponent	Object	ProtocolSupport		FolderType	Optional
HasComponent	Object	ImageSet		FolderType	Optional

DeviceTypeis a subtype of ComponentTypewhich means it inherits all InstanceDeclarations.

The DeviceType ObjectTypeis abstract. There will be no instances of a DeviceTypeitself, only of concrete subtypes.

ConnectionPoints(see 6.4) represent the interface (interface card) of a DeviceTypeinstance to a Network. Multiple ConnectionPointsmay exist if multiple protocols and/or multiple Communication Profilesare supported.

The Interfacesand their members are described in 5.5. Some of the Propertiesinherited from the ComponentTypeare declared mandatory for backward compatibility.

Although mandatory, some of the Propertiesmay not be supported for certain types of Devices. In this case vendors shall provide the following defaults:

Propertieswith DataType String: empty string
Propertieswith DataType LocalizedText: empty text field
RevisionCounter Property: - 1

Clientscan ignore the Propertieswhen they have these defaults.

When Propertiesare not supported, Serversshould initialize the corresponding Propertydeclaration on the DeviceTypewith the default value. Relevant Browse Servicerequests can then return a Referenceto this Propertyon the type definition. That way, no extra Nodesare needed.