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The 6ES7953-8LF11-0AA0 is a Micro Memory Card (MMC) belonging to the Siemens SIMATIC S7-300 / C7 automation system series, containing a 64 KB flash memory (NFLASH) capacity used to store programs and configuration data.
Core Program Carrier: Stores blocks, configs, and forced values; essential for CPU operation
Hot-Swappable: Allows direct replacement in STOP mode for easy maintenance
Firmware Upgrade Medium: Stores update files to upgrade the PLC hardware version
This Siemens module interfaces directly with S7-300 central processing units to secure system configuration data, operational parameters, and user software blocks. It operates at a working voltage of 3.3V DC to execute read and write logic, preventing volatile memory loss during complete main supply interruptions.
The flash memory technology integrated into this card ensures that the stored automation data remains intact for up to 10 years without power. It supports standard firmware update procedures for the connected CPU and allows for card replacement directly while the control system is in STOP mode.
The model has now been discontinued, and the official upgraded replacement model is 6ES7953-8LF30-0AA0. Please note that you must never use a standard PC card reader to format it, as this will damage the card and render it completely useless.
The 6ES7953-8LF11-0AA0 Micro Memory Card may still be available for purchase and support from Apter Power Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Siemens 6ES7953-8LF11-0AA0 Micro Memory Card Manuals, Datasheets, Drivers, 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.
Wastewater Treatment
Stores filtration sequencing, valve control logic, and dosing system parameters.
Automotive Assembly
Backs up conveyor sequencing, welding robot coordination, and body shop interlocking data.
Pharmaceutical Production
Retains strict batch control sequences and temperature/pressure safety parameters.
Saves multi-axis tension control code and pulp bleaching sequence data.
Electronic Component Manufacturing
Keeps cleanroom environmental control logic and assembly pick-and-place profiles.
When using the Siemens 6ES7953-8LF11-0AA0 Micro Memory Card, never insert it into a standard PC card reader for formatting, as this will destroy its proprietary boot partition and permanently damage the card, any read or write operations on a PC must utilize a dedicated Siemens PG programmer or a specialized USB card reader. Additionally, this card must only be inserted or removed when the PLC is in STOP mode or completely powered off, as hot-swapping during RUN mode may result in program data loss or system faults.
The 6ES7953-8LF11-0AA0 is the core data carrier of the S7-300 series PLC, responsible for storing user PLC automation control programs, hardware configuration data, and system parameters.
It is a 64 KB Micro Memory Card (MMC) for Siemens S7-300 PLCs.
What is the main function of 6ES7953-8LF11-0AA0?
To store PLC user programs, hardware configurations, and system parameters.
What is the storage capacity of 6ES7953-8LF11-0AA0?
The capacity is 64 KB.
How to use 6ES7953-8LF11-0AA0?
Insert it into the CPU MMC slot while the PLC power is off.
Do you offer global delivery services?
Yes. We ship globally, and we are able to quickly deliver parts globally to any corner of the world. Unless otherwise specified, we will ship your order via (DHL). We can also ship through FedEx, UPS, and TNT. We can also use your account.
How many parts do you have in stock?
We have an extensive stock base consisting of ten thousands of new and discontinued automation parts including those from leading manufacturers such as:Control Systems (DCS, PLC, CNC) ,Panel Controllers,HMI and Display Panels,Drives,Encoders and Resolvers,Power Supplies.
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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