go on
Home>PLC>Siemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414-4H

Hot Categories

Siemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414-4H

Siemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414-4H

Item NO.: 3746885
Inquiry

Warranty: 1 year 


Condition : brand new in factory sealed box


Email: sales@mvme.cn


Chat online: +86 18030175807

Detail

  • Product NameSiemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414-4H
  • Item NO.3746885
  • Weight1.0000 kg = 2.2046 lb = 35.2740 oz
  • CategoryPLC
  • BrandSiemens
  • Creation Time2026-08-25
  • SIMATIC S7-400H CPU 414-4H high-availability central processing unit
Siemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414-4H

Siemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414-4H

ManufacturerSiemensModel6ES7414-4HM14-0AB0Product TypeSIMATIC S7-400H CPU 414-4H high-availability central processing unit

01Product Profile

Siemens 6ES7414-4HM14-0AB0 is a CPU 414-4H for high-availability SIMATIC S7-400H systems and appropriately engineered S7 F/FH applications. Official S7-400 compatibility and safety documentation identifies this hardware generation with firmware V4.5 and 1.4 MB each of program and data memory. In an H system the CPU works as one side of a synchronized controller pair, so the partner CPU, synchronization modules, firmware, rack layout, communications processors and project must be treated as one controlled configuration.

Configuration ControlVerify the complete article number, CPU generation, firmware, memory, interfaces, software and system architecture before ordering.

02Technical Data

Manufacturer Siemens
Article Number 6ES7414-4HM14-0AB0
Product Designation CPU 414-4H
Automation System SIMATIC S7-400H / engineered S7 F/FH
CPU Role High-availability H-system CPU
Firmware Generation V4.5.x
Program Memory 1.4 MB
Data Memory 1.4 MB
Total Work Memory 2.8 MB
Redundancy Coupling H-system synchronization modules required
PROFIsafe Support V2 mode supported from the documented firmware generation
Engineering Requirement Exact STEP 7, H-system and F-system compatibility required
Commercial Position Legacy generation; confirm service availability

03System Role

Controller Function

  • Operates as one synchronized controller within a redundant S7-400H system.
  • Supports bumpless or controlled H-system operation only when the complete partner, synchronization and project design is correct.
  • Coordinates central and distributed I/O through the configured S7-400H communication architecture.
  • Can host fail-safe runtime functions in a properly licensed and validated S7 F/FH system.
  • Preserves the high-availability state, diagnostic history and switchover logic defined by the engineering project.

Key Capabilities

  • High-availability CPU architecture supports synchronized operation in an S7-400H pair.
  • Separate 1.4 MB program and 1.4 MB data areas provide 2.8 MB total work memory.
  • Firmware V4.5 compatibility is documented for the exact CPU article in official S7-400 records.
  • The CPU can participate in an S7 F/FH system when all required safety components and engineering rules are applied.
  • PROFIsafe V2 mode is supported from the documented firmware generation.
  • Supported S7-400 communications processors must be selected from the exact CPU and firmware compatibility combination.

04Compatibility

  • Pair the CPU only with the documented compatible partner hardware, firmware and synchronization-module arrangement.
  • Verify STEP 7, H-system option software and any S7 F Systems version before loading the project.
  • Check every installed Industrial Ethernet and PROFIBUS communications processor against Siemens CPU compatibility lists.
  • Preserve rack positions, redundant network paths, H parameters, memory-card data and process-image assignments.
  • For F/FH use, verify PROFIsafe versions, F-I/O, safety signatures, F-monitoring times and acceptance records.
  • Do not replace this generation with a newer H CPU without an engineered hardware, firmware, network and project migration.

05Applications

  • Maintenance of legacy S7-400H redundant control systems.
  • High-availability process plants using paired CPU 414-4H controllers.
  • Engineered S7 F/FH applications with documented safety configuration and acceptance.
  • Spare-part exchange where both H partners and synchronization hardware can be matched.
  • Lifecycle assessments that must preserve installed communications processors and network paths.
  • Controlled modernization projects requiring a complete backup of the H-system project and diagnostic configuration.

06FAQ

What is Siemens 6ES7414-4HM14-0AB0?

It is a legacy SIMATIC S7-400H CPU 414-4H used as one controller in a synchronized high-availability system.

How much work memory is documented?

Official S7 F/FH documentation identifies 1.4 MB for the program and 1.4 MB for data, for 2.8 MB total.

Can the CPU run by itself?

Commissioning and service modes are project-dependent, but its intended system role is as part of an engineered redundant S7-400H pair.

Can it be used in fail-safe applications?

It can be used in a properly engineered S7 F/FH system with the required software, licenses, F-I/O, safety configuration and validation.

Can a newer H CPU replace it directly?

No automatic replacement is assumed. Partner hardware, synchronization, firmware, networks, memory and the complete project require migration engineering.

What must be tested after replacement?

Test H synchronization, redundancy switchover, every network and I/O path, diagnostics, process continuity and all required functional-safety acceptance functions.

You May Also Like