Simatic WinAC RTX F software safely controls critical devices from a standard dual-core Windows XP PC. The software allows standard control logic, as well as office applications, to run on the same PC with safety-rated logic. Scalable for standard or WinXP-embedded PCs, the software is preloaded on several Siemens PC-based or embedded controllers, including the Simatic S7-mEC-RTX F modular embedded controller and IPC 427C-RTX F industrial PC.