SIEMENS 6SL3255-0VA00-5AA0 SINAMICS V20 smart access web server module. Web server-based operator panel with wireless client connection SINAMICS V20 Smart Access Module for mobile commissioning, diagnostics, service. The optional SINAMICS V20 Smart Access Module can be simply plugged onto the converter. It becomes even easier to handle the SINAMICS V20 converter and more user-friendly as it can be commissioned and operated via smartphone, tablet or laptop.