SIEMENS 6ES7412-2EK07-0AB0 CPU412-2 PN Processor Module | Replacement, Equivalent & Selection Guide
The SIEMENS 6ES7412-2EK07-0AB0 is a central processing unit (CPU) module belonging to the SIMATIC S7-400 programmable logic controller (PLC) family. Designated as the CPU412-2 PN, it integrates a PROFINET interface alongside the standard MPI/DP communication port, making it a mid-range controller suited for complex, distributed automation architectures in industrial environments.
Selection Background — Why Replacement & Equivalent Models Matter
Industrial buyers frequently search for a replacement or equivalent for the 6ES7412-2EK07-0AB0 due to end-of-life announcements, long lead times, budget constraints, or the need to upgrade an existing S7-400 rack without full system redesign. Understanding which models are direct drop-in substitutes versus functional equivalents is critical to avoiding costly commissioning errors. This guide consolidates that information so you can make a confident sourcing decision — or contact Konmask for expert pre-sales support.
Technical Specifications
- Order Number: 6ES7412-2EK07-0AB0
- Product Family: SIMATIC S7-400
- CPU Type: CPU412-2 PN
- Work Memory: 512 KB (expandable via memory card)
- Load Memory: 8 MB integrated Flash (expandable to 64 MB via MMC)
- Processing Speed: 0.1 ms / 1000 binary instructions
- Communication Interfaces: 1× MPI/DP (12 Mbit/s), 1× PROFINET IO (100 Mbit/s, 2-port switch) ⚑ Key for replacement decisions
- Max. I/O Modules: 131,072 digital / 4,096 analog channels
- Racks Supported: Up to 21 (CR + ER)
- Isochronous Mode: Supported
- Supply Voltage: 24 V DC (via backplane bus)
- Operating Temperature: 0 °C to +60 °C
- Dimensions (W×H×D): 25 mm × 290 mm × 219 mm
- Weight: Approx. 500 g
- Firmware Version: V7.0 (07/2013 release)
- Certifications: CE, UL, cULus, ATEX Zone 2
Compatible Replacement & Equivalent Models
⚑ Always verify firmware compatibility, memory card format, and PROFINET topology before substituting any CPU module in a live system.
1. Direct Drop-in Replacements (Same Form Factor & Interface)
- 6ES7412-2EK07-0AB0 (same order number, different production batch) — identical hardware, no reconfiguration required.
- 6ES7412-2EK06-0AB0 (V6.0 firmware predecessor) — same slot footprint; firmware downgrade may be needed for older TIA Portal projects. Verify MMC compatibility.
2. Functional Equivalents (Same S7-400 Family, Upgraded Performance)
- 6ES7414-2XK05-0AB0 (CPU414-2 DP) — higher work memory (1.4 MB), DP only; suitable if PROFINET is not required and more program space is needed.
- 6ES7416-2XN05-0AB0 (CPU416-2 DP) — significantly higher performance tier; use when the 412 is at capacity. Requires rack re-engineering for slot allocation.
- 6ES7412-5HK06-0AB0 (CPU412H) — high-availability redundant variant; same base architecture but requires H-system rack configuration.
3. Cross-Brand Alternatives (Functional Substitute, Different Ecosystem)
- Allen-Bradley 1756-L73 ControlLogix — comparable mid-range PLC CPU with EtherNet/IP; requires full I/O re-mapping and program migration from STL/LAD to RSLogix 5000.
- Mitsubishi Q06UDEHCPU — MELSEC-Q series equivalent performance class; PROFINET not native, requires gateway module (e.g., QJ71PN92D).
- Schneider Electric Modicon M580 BMEP582040 — Ethernet-native PAC; suitable for greenfield replacement projects with full rewiring budget.
Cross-brand alternatives require complete system re-engineering. Contact Konmask for a feasibility assessment before proceeding.
Why Choose the Original Model
- Precision & Determinism: The 6ES7412-2EK07-0AB0 delivers deterministic cycle times critical for motion-coordinated and safety-integrated S7-400 applications.
- Certified Compliance: CE, UL, cULus, and ATEX Zone 2 certifications ensure regulatory acceptance in process industries without additional validation overhead.
- Native PROFINET IO: Built-in 2-port PROFINET switch enables line topology without external switches, reducing BOM cost and failure points.
- Seamless TIA Portal Integration: Full compatibility with STEP 7 V5.x and TIA Portal V13–V19 eliminates migration risk for existing projects.
- Siemens Lifecycle Support: Access to official firmware updates, spare parts, and Siemens Industry Online Support (SIOS) documentation.
- Warranty & Traceability: Konmask supplies units with verifiable batch traceability and a minimum 12-month warranty, matching OEM quality assurance standards.
Typical Applications
- Chemical & Petrochemical: Reactor control and batch sequencing in ATEX Zone 2 classified areas.
- Automotive Manufacturing: Body-in-white welding line coordination with isochronous PROFINET motion control.
- Water & Wastewater: SCADA-integrated pump station control with distributed remote I/O over PROFINET.
- Power Generation: Turbine auxiliary system monitoring and interlock logic in combined-cycle plants.
- Food & Beverage: CIP/SIP sequence control with hygienic I/O modules on S7-400 racks.
- Steel & Metals: Rolling mill drive coordination requiring high-speed, deterministic PLC scan cycles.
System Compatibility
- 6ES7400-1TA01-0AA0 — UR2 Universal Rack (9-slot), primary mounting rack for CPU412-2 PN
- 6ES7407-0KA02-0AA0 — PS407 10A Power Supply Module, 24 V DC input
- 6ES7952-1KK00-0AA0 — 4 MB SIMATIC Micro Memory Card (MMC) for program backup
- 6GK7343-1EX30-0XE0 — CP343-1 PROFINET Communication Processor (for S7-300 integration)
- 6ES7153-2BA02-0XB0 — IM153-2 Interface Module for ET 200M distributed I/O over PROFINET
- 6ES7431-1KF20-0AB0 — SM431 Analog Input Module, compatible with S7-400 expansion racks
Selection Guide
Answer these three questions to confirm the 6ES7412-2EK07-0AB0 — or its replacement — is the right fit for your system:
- Does your application require PROFINET IO controller functionality? If yes, the CPU412-2 PN is the entry-level S7-400 CPU with native PROFINET. If DP-only is sufficient, consider the CPU412-2 DP (6ES7412-2XK07-0AB0) at lower cost.
- Is your program size within 512 KB work memory? If your existing project exceeds this limit after migration, step up to the CPU414-2 PN (6ES7414-2XK05-0AB0) for 1.4 MB work memory without changing the rack.
- Are you replacing a failed unit in an existing S7-400 rack? Confirm the firmware version of the failed CPU (readable from the MMC label or STEP 7 project) and match it to avoid compatibility issues with existing I/O configurations.
Not sure? Contact Konmask at support@konmask.com — our engineers will review your project file and recommend the correct replacement within 24 hours.
Quality Assurance & Sourcing
Konmask sources the 6ES7412-2EK07-0AB0 exclusively through authorized distribution channels and verified secondary-market suppliers with full chain-of-custody documentation. Every unit undergoes a 4-step inspection before shipment:
- Visual Inspection: Housing integrity, label authenticity, connector pin condition, and anti-counterfeit hologram verification.
- Firmware & Serial Verification: Firmware version confirmed via STEP 7 online diagnostics; serial number cross-referenced against Siemens product database.
- Functional Power-On Test: CPU cycled through RUN/STOP modes; PROFINET port link-up confirmed with test switch.
- Packaging & ESD Protection: Repackaged in anti-static bag with desiccant, foam-lined carton, and tamper-evident seal.
Available documentation upon request: Test report, certificate of conformity, packing list, commercial invoice, and country-of-origin declaration.
How to Order
- Submit Your Inquiry: Email support@konmask.com with order number 6ES7412-2EK07-0AB0, required quantity, and delivery destination. Alternatively, use the product page inquiry form.
- Receive Quote & Lead Time: Konmask responds within 24 hours with pricing (HKD/USD), stock availability, estimated lead time, and shipping options (DHL / FedEx / sea freight).
- Confirm & Ship: Upon order confirmation and payment, units are dispatched with full tracking. Export documentation and customs HS code (8537.10) provided for international shipments.
Replacement & Compatibility FAQ
Q1: Can the 6ES7412-2EK06-0AB0 directly replace the 6ES7412-2EK07-0AB0?
A: In most cases, yes — both are CPU412-2 PN modules sharing the same slot footprint and backplane interface. The V6.0 predecessor (EK06) is a functional substitute for the EK07 in existing racks, but you should verify that your STEP 7 or TIA Portal project was compiled under a firmware version compatible with V6.0. Upload the MMC from the original unit to the replacement before powering on.
Q2: Is the CPU412-2 PN compatible with ET 200S and ET 200M distributed I/O over PROFINET?
A: Yes. The 6ES7412-2EK07-0AB0 supports PROFINET IO controller mode and is fully compatible with ET 200S (6ES7151-x series), ET 200M (IM153-2), and ET 200SP distributed I/O stations as IO devices. Maximum 125 IO devices per PROFINET interface.
Q3: What is the equivalent Siemens S7-1500 substitute for the 6ES7412-2EK07-0AB0?
A: There is no direct drop-in equivalent in the S7-1500 family due to the different rack and backplane architecture. The closest functional equivalent for a migration project is the 6ES7515-2AM02-0AB0 (CPU1515-2 PN), which offers comparable PROFINET IO controller capacity and program memory. Migration requires TIA Portal V15+ and a full hardware reconfiguration. Konmask can provide migration feasibility assessments on request.
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