4 Structure of the OPC UA series

4.3 Access Type specification parts

Part 8 (OPC 10000-8) – Data Access
Part 8 specifies the use of OPC UA for data access.
Part 9 (OPC 10000-9) – Alarms and Conditions
Part 9 specifies use of OPC UA support for access to Alarms and Conditions. The base system includes support for simple Events; this specification extends that support to include support for Alarms and Conditions.
Part 10 (OPC 10000-10) – Programs
Part 10 specifies OPC UA support for access to Programs.
Part 11 (OPC 10000-11) – Historical Access
Part 11 specifies use of OPC UA for historical access. This access includes both historical data and historical Events.