Siemens PCU 50.5-C 6FC5210-0DF52-2AA0 Industrial PC
The Siemens PCU 50.5-C with order number 6FC5210-0DF52-2AA0 is a powerful PC unit designed for SINUMERIK 840D sl and 828D CNC controllers. It serves as the central human-machine interface (HMI) for machine tool operation, program management, and process visualization.
Hardware Configuration
This PCU is equipped with an Intel Celeron M processor at 1.5 GHz, 512 MB DDR2 RAM, and a 40 GB hard disk drive. The display interface supports both TFT and touch screens via VGA or DVI. It includes two Ethernet ports (10/100/1000 Mbps), four USB 2.0 ports, a serial COM port, and a CF card slot for system recovery.
Operating System and Software
The unit runs on Windows Embedded Standard 2009, providing real-time capabilities required for CNC applications. Pre-installed software includes the SINUMERIK Operate interface, which offers function-oriented menus, 3D simulation, and integrated PLC communication via MPI or PROFIBUS.
Environmental and Mechanical Specifications
Operating temperature: 0°C to 45°C. Storage temperature: -20°C to 60°C. Relative humidity: 5% to 95% non-condensing. Vibration resistance: 1 g (10–58 Hz), 0.5 g (58–500 Hz). Shock resistance: 15 g / 11 ms. Protection rating: IP20 on the front with optional sealing. The housing is made of galvanized steel for electromagnetic compatibility.
Integration into CNC Systems
The PCU 50.5-C connects to the NCU (Numerical Control Unit) via Ethernet or PROFIBUS DP. It manages part programs, tool data, and workpiece coordinate systems. Users can run external applications like CAD viewers or DNC software alongside the CNC HMI. The device supports remote diagnostics and data backup over network drives.
Advantages for Metalworking and Machining Centers
This PCU enhances productivity through high-speed program processing, intuitive touch operation, and comprehensive error logging. Its fanless design reduces maintenance needs, while the solid-state storage option (optional) improves shock resistance. The unit is backward compatible with previous SINUMERIK generations, protecting investment in legacy machinery.





