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Version Information
Release Notes, Update information, Certifications and Frequently Asked Questions.
Release Notes Version 3.20
All the new features and changes in WinCC OA V3.20.
Performance

Version Information
Release Notes, Update information, Certifications and Frequently Asked Questions.
- What is WinCC OA?
- Release Notes Version 3.20
  All the new features and changes in WinCC OA V3.20.
- Update 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.
- Product Certifications
  An overview of WinCC OA's certified standards
- Frequently Asked Questions
  A collection of common customer questions
Concepts
Your first step into modern and powerful process visualization.
Deployment
Topics, you need to know, before using WinCC OA.
Security
Go beyond the norm in cybersecurity.
Engineering
Powerful tools for easy or complex engineering tasks.
Data Management
Classify, structure and archive your data.
Business Logic / Control
Endless possibilities in data processing for your projects.
Data Visualization
User interfaces, Trends and Reports for every purpose and device.
Southbound Interfaces
The process connection to the actual machines/sensors.
Northbound Interfaces
Your portal to the cloud or supervising systems.
Web Connectivity / Network Interfaces
Data exchange, APIs and web technologies
User Management
All about authorization, authentication and login-customization.
Availability
How to get your system uptime to the maximum.
Reporting
Create state of the art project reports without limits.
Addons
Useful tools and enhancements for special demands.
Reference Tables
Detailed and extensive content for special project adaptation.
Videos & Tutorials
Explore the capabilities of WinCC OA with our carefully selected collection of video tutorials and guides.
WinCC OA Documentation
Basic information about terms and functions within the documentation.
Disclaimer
A brief clarification of liability exclusions or legal notices.

Performance

WinCC OA Is Still Getting Faster!

DP Functions/Hotlinks

Improved performance for message handling in the central Event Manager for messages generated by the calculation of datapoint functions.
This leads to a massive increase in performance when a lot of datapoint functions are triggered at the same time (peak situations).
Please keep in mind that a high number of data point functions may have an immediate impact on overall system performance.

Mapping Of Alert Text Information

In case of an inactive alert handling, the alert text information is mapped to the attribute "_original.._text" if the value is inside of an alert range. This mapping is now deactivated by default to increase the performance in Event Manager by about 20%.
If necessary for the compatibility of your specific business logic, the previous functionality can be activated again, see Handling of deactivated _alert_hdl Configurations.