6 Standard ObjectTypes

6.3 ObjectTypes for the Server Object

6.3.9 NonTransparentRedundancyType

This ObjectType is a subtype of ServerRedundancyType and is used to identify the capabilities of the OPC UA Server for non-transparent redundancy. It is formally defined in Table 17.

Table 17 – NonTransparentRedundancyType definition

Attribute	Value
BrowseName	NonTransparentRedundancyType
IsAbstract	False

Subtype of the ServerRedundancyType defined in 6.3.7, which means it inherits the InstanceDeclarations of that Node.

References	NodeClass	BrowseName	DataType	TypeDefinition	Modelling Rule
HasProperty	Variable	ServerUriArray	String[]	PropertyType	Mandatory
Conformance Units
Redundancy Server

ServerUriArray is an array with the URI of all redundant Servers of the OPC UA Server. See OPC 10000-4 for the definition of redundancy in this standard. In a non-transparent redundancy environment, the Client is responsible to subscribe to the redundant Servers. Therefore the Client might open a session to one or more redundant Servers of this array. The ServerUriArray shall contain the local Server.

RedundancySupport is inherited from the ServerRedundancyType. It shall be set to COLD_1, WARM_2, HOT_3 or HOT_AND_MIRRORED_5 for all instances of the NonTransparentRedundancyType. It defines the redundancy support provided by the Server. Its intended use is defined in OPC 10000-4.