Siemens 1516-3 PN/DP Central processing unit Part number 6ES7516-3AP03-0AB0

Product Overview

The Siemens 6ES7516-3AP03-0AB0 is the SIMATIC S7-1500 CPU 1516-3 PN/DP — a high-performance central processing unit designed for advanced, mid- to large-scale automation tasks. It offers fast execution times, extensive memory resources, and integrated communication interfaces, making it an ideal choice for complex control, motion, and data-intensive industrial applications.

Key Features

• Powerful SIMATIC S7-1500 CPU with PROFINET and PROFIBUS DP interfaces
• Integrated PROFINET IRT interface with 2-port switch
• Additional PROFINET RT interface and integrated PROFIBUS DP master/slave
• Large program and data memory suitable for complex automation logic
• High-speed bit processing performance of approximately 6 ns
• Supports isochronous mode for precise motion and real-time applications
• Diagnostic functions and I&M data (I&M0 to I&M3) supported
• Modular design requiring a SIMATIC memory card for operation
• Rugged, industrial-grade construction with extended temperature capability
• Compatible with the full S7-1500 modular ecosystem and expansion modules

Technical Specifications

• Article Number: 6ES7516-3AP03-0AB0
• CPU Type: SIMATIC S7-1500 CPU 1516-3 PN/DP
• Program Memory: 2 MB
• Data Memory: 7.5 MB
• Bit Processing Time: Approx. 6 ns
• Interfaces: 2× PROFINET IRT (switch), 1× PROFINET RT, 1× PROFIBUS DP
• Isochronous Mode: Supported (central and distributed)
• I&M Data: I&M0, I&M1, I&M2, I&M3
• Supply Voltage: 24 V DC (typical for S7-1500 systems)
• Memory Card Requirement: SIMATIC Memory Card mandatory for operation
• Product Lifecycle: Active — part of the current S7-1500 platform

Compliance & Certifications

• Designed in accordance with Siemens industrial automation standards
• Compliant with global safety, EMC, and industrial control regulations
• Part of the SIMATIC S7-1500 automation system with international approvals

Applications

The 6ES7516-3AP03-0AB0 CPU is used in advanced automation systems requiring high-speed processing, extensive communication capability, and reliable performance. Typical applications include manufacturing lines, machinery control, motion control systems, complex sequencing, data acquisition, SCADA-connected automation, and mixed network environments combining PROFINET and PROFIBUS architectures.