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Siemens 6ES7412-3HJ14-0AB0 SIMATIC S7-400H CPU 412-3H

Siemens 6ES7412-3HJ14-0AB0 SIMATIC S7-400H CPU 412-3H

Product Name: SIMATIC S7-400H CPU 412-3H Fault-Tolerant Controller

Brand Name: Siemens

Model Number: 6ES7412-3HJ14-0AB0

Place of Origin: Germany

Warranty: 12 Months

Whatsapp: +86 18020776782

Email: [email protected]

Appurtenance:

siemens 6es7412 3hj14 0ab0 simatic s7 400h cpu 412 3hsiemens 6es7412 3hj14 0ab0 simatic s7 400h cpu 412 3h fault tolerant controller-1

Overview
H-System Recovery
Description
DP Diagnostics
Specifications
Commercial Term
Contact info
FAQ
Other Products
Recommended Products

Fault-tolerant S7-400H processor with MPI/PROFIBUS DP and dual synchronization interfaces

CPU 412-3H provides 768 KB work memory, one MPI/DP interface and two optical synchronization-module interfaces for S7-400H and S7-400F/FH systems. Replacement must preserve the H-system configuration, firmware alignment, synchronization hardware, project and memory strategy.

H-system and firmware check: Confirm both H-system CPU order numbers, firmware V4.5 compatibility, STEP 7 hardware configuration, rack and slot, MPI/DP network, IF 960 synchronization modules and optical paths, memory card and battery state before replacing either subsystem.

H-System Recovery

Both redundant subsystems, their synchronization path and their project state must be treated as one controlled system.

Subsystem record

Capture both CPU order numbers, firmware, rack and slot, operating state and diagnostic buffers.

Synchronization path

Identify both IF 960 modules, fiber routes and normal synchronization indications before disconnection.

Project baseline

Keep the complete STEP 7 H-system project, hardware configuration, blocks, symbols and safety records.

Description

6ES7412-3HJ14-0AB0 is the SIMATIC S7-400H CPU 412-3H for redundant S7-400H and safety-related S7-400F/FH systems. It provides 512 KB program memory, 256 KB data memory, one MPI/PROFIBUS DP interface and two slots for optical synchronization submodules.

A controlled replacement requires a verified STEP 7 archive and a record of both subsystem states. Capture CPU firmware, hardware configuration, diagnostic buffers, memory and battery condition, DP addresses, IF 960 module details and synchronization-fiber routing before shutdown.

DP Diagnostics

Separate CPU, fieldbus and synchronization faults before deciding that replacement hardware is defective.

MPI/DP network

Record address, baud rate, master configuration, termination, repeaters and all expected DP devices.

Diagnostic buffer

Save entries from both CPUs and relevant modules before clearing alarms or changing configuration.

Controlled test

Verify redundancy, communication, CiR behavior and controlled I/O response after the system is synchronized.

Specifications

Product type designation	SIMATIC S7-400H CPU 412-3H
Order number	6ES7412-3HJ14-0AB0
System use	S7-400H and S7-400F/FH
Firmware reference	V4.5
Work memory	768 KB total: 512 KB program and 256 KB data
Primary interface	MPI / PROFIBUS DP, up to 12 Mbit/s
Synchronization	2 interfaces for IF 960 optical synchronization modules
Engineering	STEP 7 V5.3 SP2 or higher with hardware update
Power consumption	Typical power loss 5.5 W
Installation width	2 slots
Dimensions	50 x 290 x 219 mm
Approximate weight	0.99 kg

Commercial Term

Quotation

Current price and availability

Payment

T/T or agreed terms

Lead time

Confirmed with quotation

Shipping

DHL, FedEx, UPS or agreed freight

Warranty

12 months

Contact info

CONTACT

Jim Pei

[email protected]

+86 180 2077 6782

FAQ

How can I verify that 6ES7412-3HJ14-0AB0 is suitable for the existing S7-400H system?

Match both subsystem CPU order numbers, firmware V4.5 compatibility, two-slot space, STEP 7 hardware configuration, MPI/DP requirements and the IF 960 synchronization modules. For an F/FH system, include the approved safety project and lifecycle constraints.

What should be backed up before replacing 6ES7412-3HJ14-0AB0?

Archive the complete STEP 7 H-system project and compare it online with both CPUs. Save diagnostic buffers, hardware configuration, program and data blocks, DP network details, CPU firmware, memory-card data and the documented safety signature where applicable.

Why can 6ES7412-3HJ14-0AB0 fail to synchronize with the partner CPU?

Compare CPU and firmware compatibility, operating states, loaded hardware configuration and IF 960 module types. Inspect both synchronization fibers and connectors, review diagnostic buffers on both sides and resolve any memory or project mismatch before another restart.

How should one subsystem containing 6ES7412-3HJ14-0AB0 be replaced without losing redundancy control?

Follow the approved S7-400H maintenance sequence, identify the active and standby subsystem and confirm the process risk. Replace only the documented side, restore the verified configuration and do not release the system until synchronization and redundancy diagnostics are normal.

What should be checked when the MPI or PROFIBUS DP network does not recover with 6ES7412-3HJ14-0AB0?

Verify the CPU interface mode, address, baud rate, cable and termination, configured DP masters and expected devices. Compare the online hardware view with the project and read the CPU and interface diagnostics before changing the program.

How should CiR changes be handled after installing 6ES7412-3HJ14-0AB0?

Confirm that the approved project and affected modules support Configuration in RUN, review the expected synchronization time and process effect and make one controlled change at a time. Verify both H subsystems, diagnostics and I/O behavior before closing the change record.

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