Then—a miracle of German engineering.
Your machine is frozen. The hydraulics won't engage. The axes won't home. Production stops. If you are reading this, you have likely encountered this exact scenario. The SINUMERIK 810D is a legendary, albeit aging, controller (released in the late 1990s). While robust, its distributed architecture makes it susceptible to communication failures between its core components.
Unlike a PC, the NCK takes 60 to 120 seconds to fully boot. However, a hardware glitch might cause it to freeze mid-boot.
