Siemens 6ES7516-3FP03-0AB0 SIMATIC S7-1500F CPU 1516F-3 PN/DP Programmable Logic Controller

The Siemens SIMATIC S7-1500F 6ES7516-3FP03-0AB0 (CPU 1516F-3 PN/DP) is a fail-safe CPU with 3 MB work memory for program and 7.5 MB for data, two PROFINET interfaces (one IRT with an integrated 2-port switch, one RT) plus a PROFIBUS DP interface, and 6 ns typical bit-instruction processing time. It requires a SIMATIC Memory Card and supports isochronous mode down to a 375 µs OB cycle.

Technical Specifications

Selection Notes

The F in CPU 1516F-3 PN/DP marks the fail-safe variant, which runs safety programs (F-blocks) with a higher nesting depth than the standard CPU supports - choose it when the application needs SIL-rated safety logic in the same CPU as standard control, rather than a separate safety PLC. The integrated 2-port PROFINET IRT switch lets one interface handle isochronous, deterministic motion traffic while the second PROFINET RT port and the PROFIBUS DP interface serve distributed non-isochronous I/O or legacy PROFIBUS devices, so no external switch or separate CP is needed for a mixed motion-plus-standard-I/O architecture. The 7.5 MB data memory suits larger recipe or data-block applications; a CPU with less memory is adequate only if the program and data footprint is confirmed smaller.

Applications

Used as the central controller in safety-integrated machine and process lines needing PROFINET IRT motion control alongside PROFIBUS DP legacy field devices - packaging lines, material handling, and process skids with SIL-rated interlocks.