Siemens 6ES7518-4FP00-0AB0 SIMATIC S7-1500F CPU 1518F-4 PN/DP

Key Features

Technical Specifications

General

Memory

Processing Performance

Electrical

Communication Interfaces

Environmental & Safety

Applications

The CPU 1518F-4 PN/DP is designed for fail-safe, high-performance automation applications across multiple industries:

• Manufacturing: Safety-critical production lines, machine tools, and assembly systems requiring SIL 3 safety functions

• Process Industries: Chemical, pharmaceutical, and food/beverage plants needing integrated safety and high-performance control

• Motion Control: Applications requiring high-precision positioning with integrated safety and isochronous mode

• Material Handling: Automated warehouses, conveyors, and sorting systems with safety zones

• Infrastructure: Water treatment, energy management, and transportation systems with fail-safe requirements

Key Benefits

Important Notes

• Lifecycle Status: This product is in Phase Out (PM400) as of October 1, 2025. Verify availability with authorized distributors before ordering. The successor model shares the same article number in some sources, suggesting a direct replacement path.

• Memory Card Required: A SIMATIC Memory Card is mandatory for operation; it is not included with the CPU.

• Engineering Software: Requires TIA Portal V19 for firmware V3.1, or V13 or higher for earlier firmware versions.

• Safety Programming: For fail-safe applications, an additional Safety Advanced license is required.

• OPC UA License: The OPC UA functionality requires a "Large" runtime license.

• SIPLUS Variant: A conformal-coated version for extreme conditions is available as 6AG1518-4FP00-4AB0 (SIPLUS S7-1500 CPU 1518F-4 PN/DP) with reduced memory (4.5 MB program).

• Known Issues: Some users have reported "Retentive Data Lost" errors on power cycling and CPU freezing at startup after hardware modification downloads. Ensure firmware is updated to the latest version and verify TIA Portal compatibility.

FAQ

Q1: What is the primary function of the 6ES7518-4FP00-0AB0?

A: It is a fail-safe CPU for the SIMATIC S7-1500F platform. It handles both standard automation logic and safety-related functions up to SIL 3 / PL e, making it ideal for applications requiring integrated safety without separate hardware.

Q2: Is this product still available?

A: This model has entered the Phase Out (PM400) stage effective October 1, 2025. It remains supported for existing installations, but availability depends on remaining stock. Verify with authorized distributors before ordering.

Q3: What are the memory specifications?

A: The CPU provides 9 MB work memory for program and 60 MB work memory for data. A SIMATIC Memory Card (max. 32 GB) is required for load memory and is not included.

Q4: What communication interfaces does this CPU have?

A: It features four interfaces: 1× PROFINET IRT with 2-port switch, 2× PROFINET RT/Basic, and 1× PROFIBUS DP master.

Q5: Does this CPU support safety functions?

A: Yes. It is certified to SIL 3 (IEC 61508) and PL e (ISO 13849-1). Standard and safety programs run simultaneously on the same CPU using PROFIsafe communication.

Q6: What software is required for programming?

A: Configuration and programming require TIA Portal V19 for firmware V3.1, or V13 or higher for earlier firmware versions. For safety programming, an additional Safety Advanced license is required.

Q7: Does this CPU support OPC UA?

A: Yes. It includes OPC UA server and client functionality. However, a "Large" runtime license is required to activate OPC UA features.

Q8: What is the power supply requirement?

A: The CPU operates on 24 V DC with a permissible range of 19.2 to 28.8 V DC. It includes reverse polarity protection.

Q9: Does this CPU support motion control?

A: Yes. It supports isochronous mode for high-precision motion control applications, with a minimum OB 6x cycle of 125 μs (distributed) and 1 ms (central).

Q10: What is the difference between this CPU and the CPU 1518HF-4 PN?

A: The CPU 1518F-4 PN/DP (this model) is a fail-safe CPU for standard single-CPU operation. The CPU 1518HF-4 PN combines fail-safe functionality with high-availability redundancy for applications requiring both safety and maximum uptime.