The Siemens part number 6AV6355-1AA31-7CB1 refers to a software license package for WinCC OA (Open Architecture) V3.17, specifically the 10 Desktop UI REDU version. This package includes 10 operator station licenses designed to extend an existing redundant WinCC OA Server license. It allows simultaneous connections of active desktop user interfaces, and the licenses are cumulatively counted.
It’s a download-only product.
Requires the WinCC OA - Redundancy option to function.
Typically used in industrial automation environments for scalable and redundant SCADA systems.