Siemens 6ES7518-4FP00-0AB0 SIMATIC S7-1500F CPU 1518F-4 PN/DP Safety Controller
The Siemens 6ES7518-4FP00-0AB0 is a SIMATIC S7-1500F CPU 1518F-4 PN/DP fail-safe controller with PROFINET IRT and PROFIBUS DP interfaces. It combines high-speed PLC processing with integrated SIL 3 and PLe safety functions.
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Description
Siemens 6ES7518-4FP00-0AB0
SIMATIC S7-1500F | CPU 1518F-4 PN/DP | Fail-Safe PLC | PROFINET IRT and PROFIBUS DP | SIL 3 / PLe
Product Detailed Description
The Siemens 6ES7518-4FP00-0AB0 is a high-performance fail-safe central processing unit from the SIMATIC S7-1500F family. Designated CPU 1518F-4 PN/DP, it combines standard PLC control with integrated safety functions for demanding industrial automation applications.The CPU provides PROFINET IRT connectivity with an integrated 2-port switch, an additional PROFINET RT interface, a further PROFINET interface for basic services, and a PROFIBUS DP interface. It supports distributed I/O, PROFIsafe communication, and isochronous operation for coordinated automation systems. Its integrated safety functions support up to SIL 3 according to IEC 61508 and Performance Level e (PLe) according to ISO 13849-1. The CPU operates on a 24 V DC supply and requires a SIMATIC Memory Card for load memory. Siemens’ January 2026 product data lists 9 MB program work memory and 60 MB data work memory for the current documented hardware/firmware configuration. Earlier product documentation lists 6 MB and 20 MB respectively, so verify the hardware and firmware revision when checking project compatibility.
Technical Specifications
| Parameter | Specification |
| Brand | Siemens |
| Model | 6ES7518-4FP00-0AB0 |
| Product Type | Fail-Safe Central Processing Unit |
| Product Family | SIMATIC S7-1500F |
| CPU Designation | CPU 1518F-4 PN/DP |
| Supply Voltage | 24 V DC |
| Permissible Voltage Range | 19.2–28.8 V DC |
| Program Work Memory | 9 MB (current Siemens data; earlier documentation lists 6 MB) |
| Data Work Memory | 60 MB (current Siemens data; earlier documentation lists 20 MB) |
| Communication Interfaces | 1 × PROFINET IRT with 2-port switch, 2 × additional PROFINET interfaces, 1 × PROFIBUS DP |
| Safety Rating | SIL 3 according to IEC 61508; PLe according to ISO 13849-1 |
| Typical Bit Operation Time | 1 ns |
| SIMATIC Memory Card | Required; maximum 32 GB |
| Engineering Software | STEP 7 / TIA Portal; version depends on firmware |
| Operating Temperature | 0 to +60°C horizontal installation; vertical installation limits apply |
| Dimensions | 175 × 147 × 129 mm |
| Net Weight | Approx. 2.079 kg |
| Country of Origin | Germany (supplier catalog listing; verify by unit label) |
| Replacement Model | No confirmed direct replacement identified |
This item is listed for catalogue and inquiry purposes. Availability, condition, revision, warranty coverage, and lead time are confirmed with each quotation.
New Surplus: All items are genuine brand-new, distributor ready-stock supplying. Please inform us if you have any inquiry or demand.
Important Application Note
Before replacing or integrating this CPU, verify its hardware functional status, firmware version, TIA Portal project version, SIMATIC Memory Card, and communication interface requirements. The documented memory capacity differs between older and newer product data revisions; confirm the actual hardware revision of the supplied unit before engineering or commissioning.
Applications
| Industrial Automation & Control | Machinery & Equipment |
| • Fail-safe PLC control systems | • Automated production machinery |
| • Distributed I/O control architectures | • High-speed manufacturing lines |
| • PROFINET-based automation networks | • Packaging and processing equipment |
| • PROFIBUS DP communication systems | • Special-purpose machinery |
| • Centralized machine control | • Complex industrial equipment |
| Safety & Electrical Systems | Industrial Applications |
| • SIL 3 safety control applications | • Automotive manufacturing |
| • PLe machine safety systems | • Process automation |
| • Emergency stop and safety interlocking systems | • Material handling systems |
| • PROFIsafe communication networks | • Industrial plant engineering |
| • Integrated standard and safety automation | • Large-scale production facilities |
Additional information
| Warranty : | 12 Month |
|---|---|
| Lead Time | Ready Stock |
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