Siemens 6AG2516-3FN01-1AB0 SIPLUS S7-1500 CPU 1516F-3 PN/DP T1 RAIL Fail-Safe Central Processing Unit

Where It Excels in Industrial Use

• Railway automation systems requiring integrated fail-safe control and high-speed processing.
• Industrial applications combining standard PLC logic with safety-related functions.
• Distributed control networks connecting PROFINET and PROFIBUS field devices.
• Control cabinets exposed to temperature fluctuations and demanding environmental conditions.
• Machine and process applications requiring coordinated safety logic, diagnostics, and communication.
• Existing SIMATIC S7-1500F installations requiring maintenance or replacement of a compatible controller.

Key Strengths at a Glance

• Integrated fail-safe processing: Combines standard automation and safety-related program execution in one controller.
• High-speed operation: Provides 1.5 MB of program work memory, 5 MB of data work memory, and 10 ns bit-operation performance.
• Three communication interfaces: Supports PROFINET IRT, a separate PROFINET RT interface, and PROFIBUS.
• Conformal-coated electronics: Provides additional protection against environmental contaminants.
• Railway-oriented design: Designed for demanding railway applications with specified environmental protection.
• Flexible programming: Supports standard and fail-safe programming through compatible Siemens engineering software.
• Safety-system integration: Supports PROFIsafe communication with compatible devices in appropriately engineered safety applications.

Technical FAQs

1. What is the main function of the Siemens 6AG2516-3FN01-1AB0?

The 6AG2516-3FN01-1AB0 is the SIPLUS S7-1500 CPU 1516F-3 PN/DP T1 RAIL, a fail-safe programmable logic controller designed for demanding industrial and railway automation applications.

2. Which communication interfaces does the CPU provide?

The CPU provides three interfaces: a PROFINET IRT interface with an integrated two-port switch, a separate PROFINET RT interface, and a PROFIBUS interface. These allow integration with compatible Ethernet-based automation equipment and PROFIBUS devices.

3. How much work memory is available?

The controller provides 1.5 MB of program work memory and 5 MB of data work memory. A compatible SIMATIC Memory Card is required for load memory.

4. What is its bit-processing performance?

The specified bit-operation performance is 10 ns. Actual execution and cycle times depend on the program structure, configured tasks, communication load, and system configuration.

5. Does the CPU support safety-related communication?

Yes. The fail-safe controller supports PROFIsafe communication with compatible devices. The safety program, I/O modules, network configuration, and complete safety function must be designed and validated for the intended application.

6. Which programming languages are supported?

Supported languages include LAD, FBD, STL, SCL, and GRAPH. Safety-programming functions and available features depend on the compatible STEP 7 and TIA Portal version.

7. What is the operating temperature range?

The specified operating range is -25°C to +60°C, with temperatures up to +70°C permitted for 10 minutes under stated conditions. The exact limits must be observed during installation and operation.

8. What supply voltage does the CPU require?

The CPU uses a nominal 24 V DC supply. The external power supply and installation must meet Siemens' electrical requirements and provide suitable power for the controller and connected system components.

9. Is the CPU suitable for railway applications?

Yes. The SIPLUS RAIL version includes conformal coating and environmental protection characteristics intended for railway-related applications. The system designer must still verify the applicable approvals, installation conditions, and operating limits.

10. What is the designated successor to this article number?

The 6AG2516-3FN01-1AB0 has been discontinued, and its designated successor is 6AG2516-3FN02-2AB0. The successor retains the 1.5 MB program memory, 5 MB data memory, three-interface communication arrangement, and 10 ns bit performance, while providing an updated environmental temperature profile of -40°C to +60°C, with +70°C permitted for 10 minutes under specified conditions.