Product Specifications

Brand	Siemens
Product Model	6ES7953-8LF11-0AA0
Memory Capacity	64 KB
Data Retention Time	At least 10 years
Write / Erase Service Life	≥100,000 cycles
Operating Voltage	3.3 V DC
Memory Medium	Flash-EPROM

The Siemens 6ES7953-8LF11-0AA0 is a legacy SIMATIC S7 64 KB Micro Memory Card (MMC) designed specifically as a non-volatile data storage medium for industrial hardware. Operating at a standard 3.3V DC voltage and utilizing specialized 3.3V NFLASH technology, this card provides reliable storage for user programs, system blocks (OBs, FBs, FCs, DBs), and hardware configuration data. It features a robust memory architecture capable of enduring at least 100,000 write/erase cycles and guarantees a data retention period of 10 years without external power supply. In the SIMATIC architecture, this MMC functions as the primary execution memory; because legacy S7-300 CPUs lack internal load memory, the system cannot execute or boot up without this card securely inserted into the designated CPU slot

Frequently asked questions：

Q : What is the Siemens 6ES7953-8LF11-0AA0?
A : It is a legacy 64 Kilobyte (KB) SIMATIC S7 Micro Memory Card (MMC) used as non-volatile load memory for Siemens industrial PLCs.

Q : Where is this product originally manufactured?
A : The 6ES7953-8LF11-0AA0 is manufactured by Siemens in Germany.

Q : Which PLC lines are natively compatible with this MMC?
A : It is primarily designed for the SIMATIC S7-300 CPU range, SIMATIC C7 all-in-one controllers, and ET 200S (IM151-CPU) distributed I/O systems.

Q : Can I store recipe data or historical data logs on this 64 KB card?
A : Yes, but it is highly restricted due to the small 64 KB capacity. It is typically reserved strictly for the PLC user program and system configuration.

Product Applications

Automobile manufacturing plants
Food and beverage and packaging plants
Pharmaceutical and chemical plants
Electronic engineering and semiconductor plants

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We provide a 12-month warranty and worldwide stock availability to guarantee smooth integration and prompt delivery for your daily operations.

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330101-00-60-10-02-00	PR6423/010-110 CON021	P0916WE	6ES7954-8LC02-0AA0
330101-00-63-10-02-00	PR6423/012-100 CON011	P0916WG	6EW1810-3AA
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330101-24-35-10-02-00	PR6423/015-111 CON041	P0926MX	6GK1543-1AA01
330101-30-63-10-02-00	PR6423/01R-111 CON031	P0931RM	6GK1905-0AE00
330101-30-63-10-02-CN	PR6424/000-030 CON021	P0931RQ	6GT2002-0AA00

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What we can supply you?

We offer quality products of a wide range of brands, enabling the parts that meet your replacement needs can be found.
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BENTLY NEVADA
• 3300 system : 3500/15, 3500/22M, 3500/45, 3500/64M, 3500/94
• 3500 system : 3500/12, 3500/20, 3500/46, 3500/50, 3500/65
• Proximity Probes : 330130-040-00-00, 330105-02-12-10-02-00, 330130-085-00-00
• Proximity Sensor : 330180-50-00, 330180-91-05, 330780-50-00, 330180-91-00
EMERSON
• DeltaV : KJ3002X1-BB1 12P068X082, KJ3221X1-BA1 12P2531X132 VE4035S2B1
• Fisher : 01984-4282-0001, 01984-2518-0002
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• Rosemount : 2051CD2A02A1AS3I1M5 405PS100N065D3H
GE
•IS200/DS200 series Excitation system card:IS200WETBH1ABA,IS200VCRCH1BBB,IS200STAIH2ACB,IS200VAICH1DAB,DS200PCCAG10ACB
•IC693/IC695/IC697/IC698/IC200/IC660/IC670 CPU module:IC693PWR321,IC695CHS012,IC697PWR711M,IC698CPE020,IC200CHS022L

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