5.1 General

OPC 10000-4 specifies all Services needed for OPC UA Aggregates. In particular:

• The Browse Service Set or Query Service Set to detect Aggregates and their configuration.

• The HistoryRead Service of the Attribute Service Set to read the aggregated history of the HistoricalNodes.

• The CreateMonitoredItems Service allows specifying a filter for each MonitoredItem to read aggregated data.