Highlights and Release Notes
- SIMATIC WinCC Open Architecture - New in Version 3.19
  - Release Notes 3.19
  - Performance
    Fastest WinCC OA ever !
  - Licensing
  - Web Activities
  - Archiving
  - Connectivity
    - OPC UA
      Enhanced feature range and support of companion specs
    - Southbound Drivers
      Enhanced shopfloor connectivity allows for use of WinCCOA in even more use cases.
    - Northbound Drivers
      New features allow better IT/OT integration capabilities
    - PM Add-Ons
      Integrates WinCC OA more deeply into Siemens portfolio landscape.
  - Others
  - Discontinuations & Deprecations
  - Supported Operating Systems, Platforms & Databases
    Overview
  - Supported Mobile Systems and Browsers
    Overview
- Patch Release Notes
- Notes for Upgrading a WinCC OA Project
  Important steps and information to consider when upgrading an existing WinCC OA project to the latest version.
- WinCC OA Version Incompatibilities
  A list of all incompatibilities that needed to be introduced between different versions of WinCC OA.

OPC UA

Enhanced feature range and support of companion specs


Highlights The enhanced OPC UA feature range and support of companion specs allows for use of WinCC OA in even more use cases. Methods are now supported in OPC UA server and client. See chapter OPC UA Server - Methods. Successful re-certification including A and C facet OPC UA Client: Decrease communication overhead on PLC side by enabling use of structs. See chapter OPC UA Structured Data Variables. Reading and writing of individual array elements or ranges for one-dimensional arrays. See chapter ../../OPC_UA/opc_ua_c_address.html#opc_ua_c_address__range. Dynamic alarm conditions, e.g.,: From the S7 1500 PLC. See chapter Dynamic Alarm Conditions. Structured data as possible parameter for method calls. See chapter OPC UA Structured Data Variables.