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6ES7952-1KM00-0AA0

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Siemens 6ES7952-1KM00-0AA0 is a long-format SIMATIC S7-400 MC 952 memory card with 4 MB of 5 V Flash EPROM storage.
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Technical specifications for 6ES7952-1KM00-0AA0

  • Manufacturer:
    Siemens
  • Part Number:
    6ES7952-1KM00-0AA0
  • Product Family:
    Siemens Simatic S7-400
  • Product Type:
    SIMATIC S7-400 MC 952 4 MB Flash EPROM Memory Card
  • Stock:
    1
  • Memory Technology:
    Flash EPROM
  • Memory Capacity:
    4 MB
  • Operating Voltage:
    5 V
  • Card Format:
    Long
  • Controller Assignment:
    SIMATIC S7-400
  • Memory Function:
    Nonvolatile load-memory storage
  • Weight:
    0.117 lbs (0.053 kg)
  • Estimated shipping dimensions:
    9.3x13.4x1.5cm
  • Tariff Code:
    8523511090
  • 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 Card Format CPU Use Handling

Features:

  • A 4 MB Flash EPROM retains S7-400 load-memory contents without battery-backed RAM.
  • The long card format fits the assigned SIMATIC S7-400 CPU memory-card interface.
  • The full order number and stored project must be checked before a controller exchange.
Siemens 6ES7952-1KM00-0AA0 provides nonvolatile load memory for its assigned S7-400 CPU.

Program blocks move from 6ES7952-1KM00-0AA0 into CPU work memory during loading and startup.

Handling 6ES7952-1KM00-0AA0 requires the documented controller state and an available project backup.

The Siemens 6ES7952-1KM00-0AA0 SIMATIC S7-400 MC 952 4 MB Flash EPROM Memory Card may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7952-1KM00-0AA0 SIMATIC S7-400 MC 952 4 MB Flash EPROM Memory Card 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 Storage Relationship

  • Load memory: The Flash EPROM retains loadable program and configuration contents outside CPU work memory.
  • Startup transfer: The CPU uses the stored project during loading and startup according to its configured sequence.
  • Capacity check: The project must fit within the documented 4 MB card capacity.
  • Backup boundary: A separate project archive is still required before card or CPU replacement.

Physical and Electrical Assignment

  • Format: The long card body matches the corresponding S7-400 memory-card slot.
  • Interface voltage: The controller slot supplies the documented 5 V card interface.
  • Order-code match: Capacity and technology must be confirmed from the complete order number, not appearance alone.
  • Insertion state: Card handling follows the CPU operating-state procedure to avoid an unintended startup condition.

Controller Startup Path

  • Project storage: The memory card holds the load-memory image used by the assigned controller.
  • Work-memory load: Executable blocks are made available to CPU work memory from the stored project.
  • Hardware data: System and configuration information must agree with the installed S7-400 station.
  • Replacement check: After exchange, verify the expected project, CPU state, and diagnostic buffer before operation.

Exchange and Data Protection

  • Before removal: Stop or secure the controller according to the documented memory-card procedure.
  • Project backup: Archive the online project and card contents before changing hardware.
  • Contact protection: Keep the card connector clean and protect it from electrostatic discharge.
  • Restart check: Confirm card recognition, load-memory size, program blocks, and the intended startup mode.
Description
Siemens 6ES7952-1KM00-0AA0 is a SIMATIC S7-400 MC 952 long-format memory card with 4 MB of Flash EPROM storage. It provides nonvolatile load-memory capacity for an S7-400 CPU without relying on a battery to preserve the programmed contents.

When 6ES7952-1KM00-0AA0 is installed in its assigned S7-400 CPU, program blocks and configuration data move between the card's load memory and the CPU work memory during loading and startup. The processor executes code from work memory while the Flash EPROM retains the load-memory image when power is removed.

The long card body of 6ES7952-1KM00-0AA0 mates with the dedicated S7-400 memory-card slot, which supplies the documented 5 V interface. Its 4 MB capacity defines the nonvolatile space available for the controller's loadable program and configuration contents.
Alternative Names
6ES79521KM000AA0 6ES7952 1KM00 0AA0 6ES 7952 1KM00 0AA0 Siemens 6ES7952-1KM00-0AA0 6ES7952-1KM00-0AA0 MC 952 6ES7952-1KM00-0AA0 4 MB Memory Card 6ES7952-1KMO0-0AA0 6ES7952-1KM00-OAA0
Technical notes
The 4 MB Flash EPROM on Siemens 6ES7952-1KM00-0AA0 stores S7-400 load-memory contents without a battery-backed RAM 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 an S7-400 CPU not recognize 6ES7952-1KM00-0AA0 after insertion?
Check the 6ES7952-1KM00-0AA0 seating, connector condition, CPU compatibility, 5 V card interface, complete order number, and controller diagnostic buffer.
What should be backed up before replacing 6ES7952-1KM00-0AA0?
Archive the 6ES7952-1KM00-0AA0 project contents, online blocks, hardware configuration, system data, CPU state, and any values required for restart.
Why can an S7-400 CPU request a memory reset after changing 6ES7952-1KM00-0AA0?
The 6ES7952-1KM00-0AA0 may contain a different or inconsistent load-memory image, so compare the card project, CPU configuration, and prescribed startup procedure.
How should 6ES7952-1KM00-0AA0 be matched to a replacement card?
Match 6ES7952-1KM00-0AA0 by full order number, Flash EPROM technology, 4 MB capacity, long format, voltage, and the target S7-400 CPU.
Why can 6ES7952-1KM00-0AA0 retain data without a backup battery?
The 6ES7952-1KM00-0AA0 uses nonvolatile Flash EPROM for load memory, while CPU work memory follows the controller retention design.
What should be checked after restoring a project to 6ES7952-1KM00-0AA0?
Verify the 6ES7952-1KM00-0AA0 block set, system data, hardware configuration, CPU startup mode, diagnostics, and expected process behavior.