Without a license, the software typically runs for 30 minutes before requiring a restart. Key Features of Version 3.18
Delivery Release – WinCC Open Architecture V3.18 - Support
Access full installers and the latest maintenance patches at the WinCC OA Download Center.
Siemens does not offer a separate "demo" installer. Instead, the standard software functions in a restricted mode without a license.
If you need mobile access, you can find the SIMATIC WinCC OA UI APK on specialized mobile app repositories. How to Get a Trial Version
New Online Documentation. Starting with WinCC Open Architecture V3. 18, an online version of this documentation will be available,
The most reliable and secure way to obtain the software is through the official WinCC OA Portal .