CPU 1517F-3 PN/DP — fail-safe controller with triple interface
The Siemens 6ES7517-3FP01-0AB0 is a SIMATIC S7-1500F fail-safe CPU from the CPU 1517F-3 PN/DP family, packing 3 MB of program memory and 8 MB of data memory for safety-oriented automation tasks. It carries three communication interfaces: a PROFINET IRT port with an integrated 2-port switch for deterministic motion control, a second PROFINET RT port, and a PROFIBUS DP connection — covering both real-time Ethernet and legacy fieldbus in one chassis. The 2 ns bit performance figure means this CPU handles high-speed logic evaluation and fast I/O response, suitable for synchronized multi-axis lines or safety-rated interlocks where scan cycle jitter matters.
NRND status — phase-out October 2025
Siemens lists this CPU as NRND (Not Recommended for New Designs) with a scheduled phase-out in October 2025. For new projects, Siemens recommends evaluating the current-generation S7-1500F CPU family — the 6ES7517-3FP01-0AB0 remains orderable through independent distribution channels for existing BOMs and line-down replacements, quoted against the RFQ quantity.
Compliance and export notes
RoHS compliant since 15 April 2024, with a REACH Article 33 disclosure for lead (CAS 7439-92-1) above 0.1% w/w in certain components. Export Control Classification: AL N / ECCN 9N9999 — no special license required for most industrial destinations, but cross-border traders should verify local end-use restrictions.
Physical integration — DIN-rail mount, IP20
Snaps onto standard DIN rail, IP20 rated for cabinet installation — no washdown protection, so keep it behind the panel door in dry, controlled environments. Packaged dimensions 22.3 x 19.8 x 15.9 cm; the unit occupies a single-width slot in the S7-1500 profile rail, leaving room alongside power supplies and I/O modules.