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This Object is used as the browse entry point for information about the Aggregates supported by a Server. The content of this Object is already defined by its type definition. All Instances of the FolderType use the standard BrowseName of ‘AggregateFunctions’. The HasComponent Reference is used to relate a ServerCapabilities Object and/or any HistoricalServerCapabilities Object to an AggregateFunction Object. AggregateFunctions is formally defined in Table 3.

Table 3 – Aggregate Functions Definition

Attribute	Value
BrowseName	AggregateFunctions
References		Node Class	BrowseName	DataType	TypeDefinition	ModellingRule
HasTypeDefinition		Object Type	FolderType	Defined in OPC 10000-5

Each ServerCapabilities and HistoricalServerCapabilities Object shall reference an AggregateFunction Object. In addition, each HistoricalConfiguration Object belonging to a HistoricalDataNode may reference an AggregateFunction Object using the HasComponent Reference.