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6ES7412-1XJ05-0AB0

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Siemens 6ES7412-1XJ05-0AB0 is a SIMATIC S7-400 CPU 412-1 processor with 288 KB divided work memory and one isolated MPI/PROFIBUS DP interface.
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Technical specifications for 6ES7412-1XJ05-0AB0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7412-1XJ05-0AB0
  • Product Family:
    Siemens Simatic S7-400
  • Product Type:
    SIMATIC S7-400 CPU 412-1 Processor
  • Stock:
    1
  • Work Memory:
    288 KB integrated
  • Program Memory:
    144 KB
  • Data Memory:
    144 KB
  • Memory Card Support:
    FEPROM or RAM up to 64 MB
  • Bit and Word Execution:
    Typically 75 ns
  • Floating-Point Execution:
    Typically 225 ns
  • Integrated Interface:
    MPI/PROFIBUS DP, isolated RS485
  • Maximum Transfer Rate:
    12 Mbit/s
  • DP Master Interfaces:
    1
  • Maximum DP Devices:
    32
  • Total Connections:
    32
  • Diagnostic Buffer:
    Up to 200 entries
  • Digital Address Space:
    4 KB input and 4 KB output
  • Operating Temperature:
    0 to +60 °C
  • Module Width:
    25 mm
  • Weight:
    1.858 lbs (0.843 kg)
  • Estimated shipping dimensions:
    30.2x23.3x4.1cm
  • 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 Memory MPI/DP Addressing Diagnostics

Features:

  • Integrated work memory is split between program and data blocks.
  • One isolated RS485 interface serves MPI or PROFIBUS DP operation.
  • The CPU coordinates central-rack execution and distributed I/O traffic.
Siemens 6ES7412-1XJ05-0AB0 is the execution and communication processor for an S7-400 station.

Its memory organization keeps code and runtime data in separate work areas while a memory card holds load memory.

The same RS485 connector changes function according to whether the project selects MPI or DP master operation.

The Siemens 6ES7412-1XJ05-0AB0 article is the CPU 412-1 version with 288 KB divided work memory and one combined MPI/DP interface.
Siemens 6ES7412-1XJ05-0AB0 SIMATIC S7-400 CPU 412-1 Processor 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.

Program and Data Memory

  • Total: Integrated work memory is 288 KB.
  • Program area: 144 KB stores executable blocks.
  • Data area: 144 KB holds runtime data and data blocks.
  • Load memory: FEPROM or RAM cards expand project storage up to the documented capacity.

Combined MPI and PROFIBUS Interface

  • Physical layer: The isolated connector uses RS485.
  • MPI role: Engineering, HMI, and S7 communication share the MPI resources.
  • DP role: The CPU can control up to the documented 32 DP devices.
  • Rate: Configured transfer rates extend to 12 Mbit/s.

Process and Module Addressing

  • Process image: Input and output image sizes follow the configured CPU limits.
  • Address space: Digital input and output areas extend to 4 KB each.
  • Expansion: Central and expansion racks are assigned in the STEP 7 hardware configuration.
  • Consistency: The project must match the physical rack and installed module addresses.

Controller Diagnostic Records

  • Buffer: Up to 200 diagnostic entries retain ordered events.
  • Bus events: DP failures are separated from program and rack faults.
  • STOP analysis: The last diagnostic events indicate why the CPU changed operating state.
  • Service: Save the buffer with the project before replacing or clearing the CPU.
Description
Siemens 6ES7412-1XJ05-0AB0 is a CPU 412-1 central processor for the SIMATIC S7-400 automation system. It executes the user program, maintains process data, and coordinates rack I/O and communication from its central-rack slot.

The 288 KB work memory in 6ES7412-1XJ05-0AB0 is divided equally between program and data areas. A FEPROM or RAM memory card extends load-memory capacity, while the processor copies and works with the configured blocks according to the selected memory medium.

Through the isolated RS485 connector, 6ES7412-1XJ05-0AB0 can operate as MPI or as a PROFIBUS DP master at rates up to 12 Mbit/s. The selected network role determines whether the interface exchanges engineering and HMI traffic or cyclic data with distributed devices.

The diagnostic buffer of 6ES7412-1XJ05-0AB0 records controller and communication events independently of the process image. This separates a program stop, rack problem, or bus fault during fault analysis.
Alternative Names
6ES74121XJ050AB0 6ES7412 1XJ05 0AB0 6ES 7412 1XJ05 0AB0 Siemens 6ES7412-1XJ05-0AB0 6ES7412-1XJ05-0AB0 CPU 412-1 6ES74I2-1XJ05-0AB0 6ES7412-1XJOS-0AB0 6E57412-1XJ05-0AB0
Technical notes
Before replacing Siemens 6ES7412-1XJ05-0AB0, archive the STEP 7 hardware configuration and memory-card contents because the CPU work-memory split and interface role belong to the project.
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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 6ES7412-1XJ05-0AB0 remain in STOP after a memory-card change?
Compare the card type, project version, hardware configuration, and diagnostic buffer because 6ES7412-1XJ05-0AB0 must load a project compatible with its CPU firmware.
Can 6ES7412-1XJ05-0AB0 use MPI and PROFIBUS DP on the same connector simultaneously?
The combined interface on 6ES7412-1XJ05-0AB0 is configured for its assigned MPI or DP role, so verify the project before rewiring the network.
What causes missing distributed I/O data on 6ES7412-1XJ05-0AB0?
For 6ES7412-1XJ05-0AB0, check the DP address, bus rate, termination, device configuration, and the diagnostic buffer entry for the failed station.
How should the 288 KB memory of 6ES7412-1XJ05-0AB0 be interpreted?
The 6ES7412-1XJ05-0AB0 divides 288 KB into 144 KB program memory and 144 KB data memory rather than one interchangeable pool.
Why can an HMI connection fail while 6ES7412-1XJ05-0AB0 continues running?
Check the connection resources, MPI address, communication configuration, and partner settings because 6ES7412-1XJ05-0AB0 can continue executing while one communication path is unavailable.
Which evidence should be saved before replacing 6ES7412-1XJ05-0AB0?
Archive the STEP 7 project, hardware configuration, diagnostic buffer, memory-card contents, and network parameters associated with 6ES7412-1XJ05-0AB0.