Siemens 6ES7314-6EH04-0AB0 SIMATIC S7-300 CPU 314C-2 PN/DP Compact Controller

Siemens 6ES7314-6EH04-0AB0 is a compact SIMATIC S7-300 PLC CPU with integrated digital, analog, counter, PROFIBUS, and PROFINET functions used in industrial automation, machine maintenance, exact-part replacement, and installed-base support.

The 6ES7314-6EH04-0AB0 CPU 314C-2 PN/DP is a compact S7-300 controller built for machines that need a significant amount of onboard I/O together with both PROFIBUS/MPI and PROFINET communications. Unlike a basic CPU that relies entirely on separate signal modules, this controller integrates digital inputs and outputs, analog I/O, a Pt100 input, and high-speed counters directly into the CPU. That combination made the CPU 314C-2 PN/DP a common choice for packaging machines, process skids, material-handling systems, and OEM equipment where a compact but capable control platform was needed.

This page is built around the exact manufacturer reference 6ES7314-6EH04-0AB0. Industrial components that look similar can differ in firmware, voltage, signal type, I/O architecture, connector style, communications, safety functions, or machine-specific configuration. Using the exact part number helps reduce engineering changes, troubleshooting, and production downtime.

Lifecycle / sourcing status

Product phase-out announced; Siemens lists phase-out effective October 1, 2023. Still heavily relevant as an installed-base spare for S7-300 machinery.

Key product details

• Product family: SIMATIC S7-300 CPU 314C-2 PN/DP
• Work memory: 192 KB
• Integrated digital inputs: 24
• Integrated digital outputs: 16
• Integrated analog inputs: 4
• Integrated analog outputs: 2
• Temperature input: 1 Pt100
• High-speed counters: 4 counters up to 60 kHz
• Interface 1: MPI / PROFIBUS DP up to 12 Mbit/s
• Interface 2: Ethernet PROFINET with integrated 2-port switch
• Power supply: 24 V DC
• Memory card: SIMATIC Micro Memory Card required

Common applications

Legacy and mature S7-300 machinery, packaging lines, material handling, compact production cells, OEM machines, process skids, automated assembly, and exact CPU replacement where the existing STEP 7 project and I/O wiring should remain unchanged.

Compatibility and ordering note: Confirm the exact 6ES7314-6EH04-0AB0 article number, firmware revision, Micro Memory Card, integrated-I/O wiring, MPI/DP and PROFINET configuration, hardware catalog support, STEP 7 project, and any technology-function settings before replacement.

Why this part is commonly sourced: This CPU is a strong sourcing part because replacing a failed S7-300 compact CPU with a newer control platform can require a major controls conversion. Exact spare sourcing can preserve the existing program, wiring, network architecture, and machine validation.

Need 6ES7314-6EH04-0AB0? Corwin Solutions helps industrial buyers, maintenance teams, OEMs, integrators, and machine builders locate exact automation and MRO components, including current, legacy, obsolete, and discontinued parts. Availability, condition, exact configuration, pricing, and lead time are confirmed at quotation.