The Siemens part number 6AV6355-1AA31-7DC2 refers to a WinCC OA V3.17 driver for IEC 61850 / IEC 61400. This software driver is designed for medium and high-voltage technology applications and supports communication based on:

IEC 61850 Standard (Parts 7 & 8, Edition 2)

IEC 61400-25 (specific to wind power systems)

It includes both the IEC 61850 client driver and a browser tool for navigating IEC 61850/61400 structures. This makes it ideal for SCADA systems in energy and utility sectors that require standardized, high-performance communication with intelligent electronic devices (IEDs). It’s a download-only product and typically used in environments where interoperability and compliance with international standards are essential.