The Siemens part number 6AV6392-1XA04-0AA0 refers to the WinCC Software Protection Manual—a documentation package that outlines the licensing and authorization mechanisms for early versions of SIMATIC WinCC, particularly around Version 3.x.

Purpose: Describes the software protection and licensing system for WinCC

Content: Includes details on authorization types (e.g., full, emergency, upgrade), installation and deinstallation procedures, and troubleshooting

Format: Printed manual (originally published in August 1997)

Languages: Likely German and English

Lifecycle Status: Historical documentation—no longer actively distributed but still referenced for legacy systems