The Siemens part number 6AV6613-1GA51-3CH0 refers to WinCC flexible 2008 Runtime with support for 4096 PowerTags. This is a download-only runtime license, meaning the software and license key are delivered digitally—no physical media included. It’s compatible with:
Windows 7 (Professional/Ultimate/Enterprise, 32/64-bit)
Windows 10 (Professional/Enterprise, 64-bit)
This version is designed for HMI applications and includes features like alarm handling, recipe management, and OPC communication. Siemens officially phased out this product on October 1, 2022, so while it may still be available through distributors, it’s no longer actively marketed.