Siemens Energy & Automation has introduced the SINUMERIK 840D NCU 573.5 for increased performance and user productivity.

When used with the integrated PLC 317-2DP, this new NCU provides users with approximately 160% higher numerical control performance and 300% PLC performance over previous versions as well as more CNC user memory. The SINUMERIK 840D is a sophisticated CNC system that offers a wide range of specialized functions for milling, drilling, turning, grinding and handling technologies. Its capabilities also include nibbling, punching and laser-machining technologies.
SiemensCNC.com