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6ES7412-3HJ14-0AB0

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Siemens 6ES7412-3HJ14-0AB0 is a CPU 412-3H processor that coordinates redundant S7-400H and fail-safe S7-400F/FH control through MPI/DP and synchronization links.
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Technical specifications for 6ES7412-3HJ14-0AB0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7412-3HJ14-0AB0
  • Product Family:
    Siemens SIMATIC S7-400H
  • Product Type:
    CPU 412-3H Redundant Central Processing Unit
  • Stock:
    1
  • Hardware Version:
    1
  • Firmware Version:
    V4.5
  • Minimum Engineering Software:
    STEP 7 V5.3 SP2
  • Work Memory:
    768 KB total; 512 KB program and 256 KB data
  • Maximum Plug-In Memory:
    64 MB
  • Typical Backplane Current:
    1.2 A at 5 V DC
  • Typical Power Loss:
    5.5 W
  • Bit Operation Time:
    0.075 µs
  • Floating-Point Operation Time:
    0.225 µs
  • Maximum Data Blocks:
    4095
  • I/O Address Area:
    8192 bytes each
  • Process Image:
    8192 bytes each
  • Integrated Fieldbus:
    MPI / PROFIBUS DP, RS485
  • Maximum DP Data Rate:
    12 Mbit/s
  • Maximum DP Slaves:
    32
  • Synchronization Interfaces:
    2 pluggable fiber-optic submodules
  • Maximum Expansion Units:
    21
  • Required Rack Slots:
    2
  • Diagnostic Buffer:
    3200 entries maximum
  • Weight:
    2.533 lbs (1.149 kg)
  • Estimated shipping dimensions:
    23.1x29.8x6.6cm
  • Tariff Code:
    85371091
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Redundant Pair Memory Structure MPI & PROFIBUS Rack Resources

Features:

  • The CPU coordinates redundant S7-400H and fail-safe S7-400F/FH control tasks.
  • Two pluggable fiber-optic synchronization paths couple the redundant processor pair.
  • MPI/PROFIBUS DP connects engineering stations and distributed I/O independently of CPU synchronization.
Siemens 6ES7412-3HJ14-0AB0 executes the configured program while exchanging redundancy state through its synchronization hardware.

The work-memory split of 6ES7412-3HJ14-0AB0 reserves separate integrated areas for program code and process data.

Rack and fieldbus resources on 6ES7412-3HJ14-0AB0 connect the processor to expansion units and distributed DP devices.

The Siemens 6ES7412-3HJ14-0AB0 CPU 412-3H Redundant Central Processing Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7412-3HJ14-0AB0 CPU 412-3H Redundant Central Processing Unit Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Processor Synchronization Path

  • CPU partner: A matched S7-400H processor forms the second side of the redundant controller pair.
  • Sync positions: Two pluggable optical submodules provide the documented synchronization channels.
  • Traffic separation: Redundancy state uses the sync links instead of the MPI/PROFIBUS DP fieldbus.
  • Replacement boundary: Hardware version, firmware, optical submodules, and project settings must be checked together.

Program, Data and Load Storage

  • Program area: 512 KB of integrated work memory is assigned to program execution.
  • Data area: 256 KB of integrated work memory holds the configured data portion.
  • Load medium: A supported plug-in memory card carries the load memory up to the documented capacity.
  • Backup relation: Battery-backed and card-based storage roles depend on the configured S7-400 rack supply.

Engineering and Distributed I/O

  • Integrated interface: The isolated RS485 connection operates as MPI or PROFIBUS DP.
  • DP master role: The CPU can coordinate the documented group of PROFIBUS slave stations.
  • Data rate: The fieldbus supports configured rates up to 12 Mbit/s.
  • Power output: The interface provides the documented 5 V DC service supply within its current limit.

Central Rack and Expansion Layout

  • Slot demand: The processor occupies two S7-400 rack slots.
  • Backplane supply: The system power supply feeds the CPU through the rack backplane.
  • Expansion path: Interface modules connect the central rack to the documented number of expansion units.
  • Diagnostics: The buffer records CPU, redundancy, and communication events for STEP 7 analysis.
Description
Siemens 6ES7412-3HJ14-0AB0 is a CPU 412-3H central processing unit for redundant SIMATIC S7-400H and fail-safe S7-400F/FH systems. Its 768 KB work memory holds control logic and data while an integrated MPI/PROFIBUS DP interface connects engineering and distributed I/O.

Two pluggable fiber-optic synchronization interfaces couple 6ES7412-3HJ14-0AB0 with its partner CPU. This channel carries the coordinated operating state between the redundant processors separately from the fieldbus, so synchronization hardware and PROFIBUS wiring serve different communication paths.

Program and data in 6ES7412-3HJ14-0AB0 are divided between integrated work memory and the supported plug-in memory card. The backplane supplies the processor electronics, while the rack arrangement determines expansion units, interface modules, and the I/O address space available to the configured station.

Diagnostic-buffer entries, status information, and STEP 7 access on 6ES7412-3HJ14-0AB0 expose CPU, redundancy, and communication conditions. Replacement planning must preserve the hardware and firmware level, synchronization submodules, memory medium, and the complete S7-400H project rather than matching only the CPU family name.
Alternative Names
6ES74123HJ140AB0 6ES7412 3HJ14 0AB0 6ES7 412 3HJ14 0AB0 Siemens 6ES7412-3HJ14-0AB0 6ES7412-3HJ14-0AB0 CPU 412-3H CPU 412-3H 6ES7412-3HJ14-0AB0 6ES7412-3HJ14-OABO 6ES74I2-3HJ14-0AB0
Technical notes
Fiber-optic synchronization and a separate MPI/PROFIBUS DP fieldbus let Siemens 6ES7412-3HJ14-0AB0 coordinate a redundant processor pair without sharing one communication path.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why does 6ES7412-3HJ14-0AB0 need separate synchronization links?
The fiber links of 6ES7412-3HJ14-0AB0 carry processor-pair state independently of MPI/PROFIBUS DP field traffic.
What must match when replacing one 6ES7412-3HJ14-0AB0 in a redundant pair?
Verify 6ES7412-3HJ14-0AB0 hardware and firmware levels, synchronization submodules, memory medium, rack position, and the complete STEP 7 project.
Can the MPI/DP port replace the sync links on 6ES7412-3HJ14-0AB0?
No. The MPI/PROFIBUS DP interface of 6ES7412-3HJ14-0AB0 serves engineering and fieldbus communication, not redundant CPU synchronization.
Why must the work-memory split be considered on 6ES7412-3HJ14-0AB0?
Siemens 6ES7412-3HJ14-0AB0 assigns 512 KB to program code and 256 KB to data, so both areas must fit the project.
How are fieldbus faults investigated on 6ES7412-3HJ14-0AB0?
Use the 6ES7412-3HJ14-0AB0 diagnostic buffer and STEP 7 status together with DP topology, address, termination, and data-rate checks.
How many rack slots are required by 6ES7412-3HJ14-0AB0?
Siemens 6ES7412-3HJ14-0AB0 occupies two S7-400 rack slots, which must be reserved in the central-rack layout.

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