SINUMERIK 840D SL ADDITIONAL LANGUAGES SOFTWARE OPTION DELIVERY OF A LICENSE Operating software SINUMERIK accessory for SINUMERIK Operate. The state-of-the-art SINUMERIK Operate operating software is a technology-neutral, multi-channel operating software for machine operation, programming, diagnostics and commissioning. It offers simple, practice-oriented operation of the machine, from the production environment to the workshop. Additional languages based on the language extension software option are available for the operating software as single license without data medium. SINUMERIK - intelligent solutions for machine tools