OPC UA Book

The first OPC Unified Architecture Book, written by Wolfgang Mahnke, Stefan-Helmut Leitner and Matthias Damm one of the co-founders of ascolab.

OPC UA Specifications

The OPC UA Specification is a multi-part specification and consists of the following parts: UA Spezifikationen

  1. Concepts
  2. Security Model
  3. Address Space Model
  4. Services
  5. Information Model
  6. Service Mappings
  7. Profiles
  8. Data Access
  9. Alarms and Conditions
  10. Programs
  11. Historical Access

In contrast to the COM based specifications the UA specifications are not pure application specs. They describe mainly UA internal mechanisms which get handled through the communication stack and are only of interest for those who port the stack to a specific target platform or those who want to implement their own UA stack.

The application developer will code against the OPC UA API and therefore will mainly use the API documentation instead. Nevertheless, part 3, 4, and 5 may be interesting for the application developer as well.