
6AG2516-3FP03-4AB0 SIPLUS S7-1500 Fail-Safe CPU
This entry details the Siemens SIPLUS S7-1500 CPU 1516F-3 PN with conformal coating OT4. The unit supports extended operating temperatures and includes PROFINET and PROFIBUS interfaces.
Quick Facts
- Part number
- 6AG2516-3FP03-4AB0
- Brand
- Siemens
- Category
- PLC CPUs & Controllers
- Product type
- SIPLUS S7-1500 CPU 1516F-3 PN rail based on 6ES7516-3FP03-0AB0 with conformal coating OT4: -40
- Lifecycle
- Active Product
- Dimensions
- 16.2 x 15.6 x 8.3 cm
- Net weight
- 0.596 Kg
- Source category
- SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL
Product Overview
The 6AG2516-3FP03-4AB0 is a rail-mounted central processing unit derived from the standard S7-1500 series. It incorporates specialized environmental protections for harsh industrial settings. Review Siemens 6AG2516-3FP03-4AB0 as plc cpu controllers with source category SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL, recorded lifecycle Active Product, and submitted model identity.
This model integrates fail-safe technology directly into the CPU architecture. It provides robust control capabilities while maintaining high performance standards for complex automation tasks.
Technical Review Notes
- Central processing unit with 3 MB work memory for program storage and 7.5 MB for data handling. Keep dimensions 16.2 x 15.6 x 8.3 cm and net weight 0.596 Kg unchanged while comparing project documents and product image evidence.
- First interface utilizes PROFINET IRT with a built-in two-port switch for high-speed communication.
- Second interface supports PROFINET RT protocol for real-time Ethernet applications in automated systems.
- Third interface connects via PROFIBUS for legacy device integration and distributed I/O communication.
- Bit performance is recorded at 6 nanoseconds for precise timing in critical control loops.
- A SIMATIC Memory Card is required for operation to store configuration and firmware data.
Model Identification
- Brand designation is listed as Siemens within the industrial automation component catalog. Use the source path SIPLUS extreme RAIL fail-safe CPUs / SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL to confirm catalog context, model family, parameter review scope, and technical inquiry preparation notes.
- Product classification identifies this as a SIPLUS extreme RAIL fail-safe CPU variant.
- Base model reference is noted as being based on 6ES7516-3FP03-0AB0 specifications.
- Lifecycle status is currently recorded as Active Product for ongoing project planning.
Technical Parameters
| Product type | SIPLUS S7-1500 CPU 1516F-3 PN rail based on 6ES7516-3FP03-0AB0 with conformal coating OT4: -40 |
|---|---|
| Lifecycle | Active Product |
| Dimensions | 16.2 x 15.6 x 8.3 cm |
| Net weight | 0.596 Kg |
| Source category | SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL |
Parameters are factual source fields retained for model review.
Parameter Review
- Conformal coating OT4 provides protection against specific environmental stressors during operation. Check product-owned images, label text, connector area, and submitted model references against the exact 6AG2516-3FP03-4AB0 record before publication.
- Standard temperature range is defined as -40 degrees Celsius up to +70 degrees Celsius.
- Short-term thermal tolerance allows exposure to 85 degrees Celsius for ten-minute durations.
- Physical dimensions are recorded as 16.2 cm by 15.6 cm by 8.3 cm.
- Net weight of the unit is specified as 0.596 kilograms for logistics assessment.
Catalog Classification
Image & Label Review
- Visual inspection should confirm the presence of the OT4 conformal coating layer. Review Siemens 6AG2516-3FP03-4AB0 as plc cpu controllers with source category SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL, recorded lifecycle Active Product, and submitted model identity.
- Check that all port labels match the PROFINET and PROFIBUS interface descriptions.
- Verify the model plate displays the full part number 6AG2516-3FP03-4AB0 clearly.
- Ensure the rail mounting clips are intact and undamaged for secure installation.
Product Image Gallery

Inquiry Preparation
- Review project documentation to confirm the need for fail-safe CPU functionality. Keep dimensions 16.2 x 15.6 x 8.3 cm and net weight 0.596 Kg unchanged while comparing project documents and product image evidence.
- Assess whether the extended temperature range meets the specific site environmental conditions.
- Determine the required memory card capacity for program and data storage needs.
- Evaluate network topology requirements for PROFINET IRT and PROFIBUS integration points.
Category Context
This component falls under the broader category of PLC CPUs and controllers.
It serves as a central processing unit for advanced automation control strategies.
Review Notes
- Confirm that the base model 6ES7516-3FP03-0AB0 aligns with existing system designs.
- Verify that the 6 ns bit performance satisfies the cycle time requirements.
- Ensure that the two-port switch capability fits the network infrastructure plan.
- Check that the SIMATIC Memory Card requirement is accounted for in setup.



