Siemens SIMATIC S7 Memory Cards 6ES7952-1KP00-0AA0

Name: Siemens SIMATIC S7 Memory Cards 6ES7952-1KP00-0AA0
Brand: Siemens

Model: 6ES7952-1KP00-0AA0

Brand Siemens

Series Pending

Model 6ES7952-1KP00-0AA0

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Product Details And Specifications

Siemens SIMATIC S7 6ES7952 Series: Comprehensive Memory Card Range and Technical Overview

The Siemens SIMATIC S7 6ES7952 memory card series is the standard non-volatile storage medium for SIMATIC S7-300 and S7-400 programmable logic controllers. These Flash EPROM-based cards store user programs, data blocks, and firmware images independently of the CPU internal RAM, enabling program retention without battery backup. The 6ES7952 series is installed across heavy-industry sectors including petrochemical refineries, nuclear power auxiliary systems, offshore platforms, steel rolling mills, and large-scale water treatment facilities. Installed base counts in the tens of thousands of units globally, with many sites operating CPUs that have been in continuous service since the mid-1990s. The dependency on this card format for program archiving and CPU replacement makes it a critical spare parts category for any S7-300/400 maintenance program.

The Evolution of 6ES7952 Architecture

The SIMATIC S7-300 platform was introduced in 1993 and the S7-400 in 1994. Both platforms adopted a common Flash EPROM memory card format from the outset, with the 6ES7952 order number family covering the full capacity range. Early production cards used 5V Flash technology with capacities of 16 KB and 64 KB, sufficient for the program sizes typical of early 1990s automation logic. As application complexity grew through the late 1990s and 2000s, Siemens extended the series to 256 KB, 512 KB, 1 MB, 2 MB, 4 MB, and 8 MB variants. The physical form factor and electrical interface remained backward-compatible throughout, allowing higher-capacity cards to be used in older CPUs without hardware modification, subject to CPU firmware version constraints. The 6ES7952 cards interface via a dedicated memory card slot on the CPU front panel and are read by the CPU at power-up. They are not hot-swappable under normal operating conditions. The S7-300 and S7-400 platforms entered the Siemens product lifecycle phase of Classic (limited new development) around 2013-2015, with migration paths to the S7-1500 (using SIMATIC Memory Cards, order family 6ES7954) recommended for new installations. However, the installed base of S7-300/400 systems remains extensive, and the 6ES7952 series remains in demand for corrective and preventive maintenance through at least the 2030s based on typical plant lifecycle horizons.

6ES7952 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified production range of the Siemens 6ES7952 memory card series, organized by storage capacity. All cards are Flash EPROM type, compatible with SIMATIC S7-300 and S7-400 CPUs unless otherwise noted.

6ES7952-0KF00-0AA0: Flash EPROM memory card, 16 KB, earliest production variant for minimal S7-300 program storage.
6ES7952-0KH00-0AA0: Flash EPROM memory card, 64 KB, standard capacity for basic S7-300 applications with moderate logic volume.
6ES7952-0KK00-0AA0: Flash EPROM memory card, 256 KB, suitable for mid-complexity S7-300 programs including structured FB libraries.
6ES7952-0KM00-0AA0: Flash EPROM memory card, 512 KB, covers majority of standard S7-300 CPU program and data block requirements.
6ES7952-1KH00-0AA0: Flash EPROM memory card, 1 MB, for S7-300/400 CPUs with large user programs or extensive DB storage.
6ES7952-1KK00-0AA0: Flash EPROM memory card, 2 MB, used in S7-400 high-end CPUs and S7-300 redundant program structures.
6ES7952-1KM00-0AA0: Flash EPROM memory card, 4 MB, for S7-400 CPUs managing complex process sequences with large DB and FB structures.
6ES7952-1KP00-0AA0: Flash EPROM memory card, 8 MB, maximum standard capacity in the 6ES7952 series for S7-400 CPUs with maximum program complexity.
6ES7952-1AL00-0AA0: Flash EPROM memory card, 64 KB, legacy variant for S7-300 CPU 312 IFM and CPU 314 IFM integrated function modules.
6ES7952-1AK00-0AA0: Flash EPROM memory card, 256 KB, legacy variant for S7-300 CPU 313 and CPU 314 with standard DP interface.
6ES7952-1AM00-0AA0: Flash EPROM memory card, 512 KB, legacy batch for S7-300 CPU 315-2 DP first-generation hardware revision.
6ES7952-1AP00-0AA0: Flash EPROM memory card, 1 MB, legacy variant for S7-400 CPU 412-1 and CPU 414-1 first-generation hardware.
6ES7952-1AS00-0AA0: Flash EPROM memory card, 256 KB, alternate production batch, functionally equivalent to 6ES7952-0KK00-0AA0.
6ES7952-1KF00-0AA0: Flash EPROM memory card, 512 KB, alternate suffix variant compatible with S7-300 CPU 312 through CPU 319 range.
6ES7952-1KL00-0AA0: Flash EPROM memory card, 2 MB, alternate production variant for S7-400 CPU 412 and CPU 414 configurations.
6ES7952-1KN00-0AA0: Flash EPROM memory card, 4 MB, alternate suffix for S7-400H redundant CPU pairs in high-availability process control.
6ES7952-1KQ00-0AA0: Flash EPROM memory card, 8 MB, alternate production batch of maximum-capacity variant for S7-400 CPU 416 and CPU 417.

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