Siemens 6AG1516-3FN01-2AB0 SIPLUS CPU 1516F-3 PN/DP Central Processing Unit for S7-1500

The Siemens 6AG1516-3FN01-2AB0 (6AG1516-3FN01-2AB0) is a high-performance SIPLUS extreme fail-safe central processing unit engineered for the SIMATIC S7-1500 programmable logic controller system. Designed to deliver reliable performance in demanding operating environments, this ruggedized CPU features conformal coating that protects sensitive electronics against corrosive atmospheres, chemical contaminants, high humidity, and extreme ambient temperatures. It handles both standard control programs and functional safety applications within a single hardware architecture. The CPU 1516F-3 PN/DP integrates versatile industrial communication ports, including a PROFINET IO interface with an integrated two-port switch for line topologies, an additional independent PROFINET interface, and a PROFIBUS DP master or slave interface. Powered by a standard 24 V DC supply, the module executes high-speed logic, advanced motion, and safety-integrated functions with deterministic cycle times. It mounts directly onto the S7-1500 DIN rail and communicates across the backplane with distributed I/O modules and safety expansion units. Typical applications include chemical plants, outdoor water treatment facilities, automotive production, packaging systems, and heavy industrial automation where continuous fail-safe operation and environmental resilience are critical.