Siemens 6ES7953-8LJ30-0AA0 Micro Memory Card

Siemens SIMATIC S7 Micro Memory Card 6ES7953-8LJ30-0AA0 Overview

The Siemens SIMATIC S7 Micro Memory Card (MMC) 6ES7953-8LJ30-0AA0 is a storage medium for the SIMATIC S7-300, C7, and ET 200 series of Programmable Logic Controllers (PLCs). It is used to store user programs, data, and configuration information, serving as a critical component for the operation of these PLC systems.

Please note: This product (6ES7953-8LJ30-0AA0) has been discontinued as of October 1, 2023, and has been replaced by its successor, 6ES7953-8LJ31-0AA0.

Product Detailed Description

• Function:

• Stores user programs for SIMATIC S7-300, C7, and ET 200 PLCs.

• Stores configuration data and parameters for the PLC.

• Stores data blocks, function blocks, and organization blocks, etc.

• Allows data retention without battery backup due to its non-volatile Flash memory (Nflash) technology.

• Programs and data stored on the MMC remain preserved even after the PLC is powered off.

• Features:

• Micro Memory Card format.

• Flash-EPROM technology.

• Plug-and-play functionality for easy replacement and upgrades.

• Robust design suitable for industrial environments.

Product Parameters

• Memory Type: Flash-EPROM

• Memory Size: 512 KB (512 Kbytes)

• Voltage: 3.3V

• Number of Write/Delete Operations: Min. 100,000

• Data Retention (after final programming action): Min. 10 years

• Compatible Products: SIMATIC S7-300 series PLCs, C7 series devices, ET 200 series distributed I/O.

• Dimensions:

• Width: Approx. 24 mm

• Height: Approx. 32 mm

• Depth: Approx. 1.4 mm

• Weight: Approx. 2 g

• Country of Origin: Germany

• Product Lifecycle: PM500: Discontinued Product (End of product lifecycle since: October 01, 2023)

• Successor: 6ES7953-8LJ31-0AA0

Product Advantages

• Reliability: As a genuine Siemens spare part, it ensures optimal compatibility and reliability with compatible PLC systems.

• Data Retention: Utilizes non-volatile flash memory technology, preserving programs and data even when the PLC is powered off.

• Ease of Use: Plug-and-play design simplifies PLC program loading and card replacement.

• Robustness: Suitable for harsh industrial environments.

• Convenient Maintenance: Facilitates quick replacement and troubleshooting.

Precautions

• Product Discontinuation: This model (6ES7953-8LJ30-0AA0) has been discontinued. If a new card is needed, its successor, 6ES7953-8LJ31-0AA0, should be considered.

• Compatibility: Ensure that the MMC used is compatible with your specific SIMATIC S7-300, C7, or ET 200 CPU model.

• ESD Protection: Always take electrostatic discharge (ESD) precautions when handling the MMC to prevent damage.

• Correct Insertion/Removal: Strictly follow the instructions in the PLC or module manual for inserting and removing the MMC to avoid physical damage to the slot or the card itself.

• Data Backup: Although MMCs are non-volatile storage, it is still recommended to regularly back up PLC programs and data to other storage media.

• Avoid Excessive Erase/Write Cycles: While designed for a high number of erase/write cycles, excessively frequent operations can still reduce the MMC's lifespan.

Product Applications

• Industrial Automation: As a core storage component for SIMATIC S7-300 PLCs, it is widely used in various industrial automation fields, such as:

• Machine Building: Controlling machine tools, robots, etc.

• Process Control: Monitoring and controlling processes in chemical, food & beverage, water treatment, and other industries.

• Factory Automation: Controlling production lines, conveyor systems, packaging machinery, etc.

• Building Automation: Used in control systems for smart buildings.

• Energy Management: In energy monitoring and control systems.

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