Siemens 6ES7953-8LM31-0AA0

Siemens 6ES7953-8LM31-0AA0 Micro Memory Card

The Siemens 6ES7953-8LM31-0AA0 is a 4 MB Micro Memory Card (MMC) engineered to provide reliable and secure memory storage for Siemens S7-300, C7, and ET 200 systems. This memory card is essential for storing user programs, configuration data, and other automation-relevant files within Siemens automation environments. Compact, durable, and highly dependable, the MMC serves as both a memory expansion and a mandatory medium for operation in several Siemens CPUs, particularly in the S7-300 series. It is an indispensable tool for engineers seeking reliable memory performance in a compact form factor.

Efficient Program and Data Storage

At 4 MB capacity, this Micro Memory Card is optimized for mid-size automation applications, offering sufficient space for user programs, control logic, and runtime data storage. It supports fast and secure data transfer between the programming device and the CPU, ensuring minimal delay during program downloads, uploads, or firmware updates. The card is ideal for storing backup configurations, making it easy to transfer programs between CPUs or to reinitialize systems after maintenance or upgrades. This card facilitates fast reprogramming and system recovery in environments where program changes are frequent.

Compatible with Multiple Siemens Platforms

This MMC is designed for seamless integration with Siemens SIMATIC S7-300 programmable logic controllers, C7 compact control systems, and ET 200 distributed I/O systems. Its compatibility across these major Siemens platforms provides engineering flexibility and simplifies inventory management for automation specialists. It is beneficial for the S7-300 series, where an MMC is required for data storage and CPU operation, as the program cannot run without an inserted memory card.

Industrial-Grade Reliability and Performance

Built with industrial-grade components, the 6ES7953-8LM31-0AA0 is designed to perform reliably in various operating conditions. It withstands temperature variations, vibrations, and electrical disturbances in factory and process automation environments. The card's robust construction ensures long-term performance, while its flash-based design eliminates mechanical failure risks associated with traditional storage media. This level of durability supports mission-critical applications where system uptime and data integrity are essential.

Trusted Warranty and Service from MRO Electric

When you purchase this Siemens MMC through MRO Electric and Supply, you receive a 2-year warranty and free shipping, ensuring product assurance and cost-effectiveness. MRO Electric tests all components for quality and functionality before shipping and offers technical support for integration or troubleshooting. With fast delivery and responsive service, MRO Electric makes it easier for engineers and system integrators to keep their automation systems running smoothly.

Frequently Asked Questions (FAQ)

What is the purpose of this Micro Memory Card?

It stores user programs and configuration data required for CPU operation in Siemens S7-300 systems.

Can this MMC be used in multiple Siemens products?

It is compatible with Siemens S7-300, C7, and ET 200 systems.

Is 4 MB sufficient for typical automation programs?

Yes, 4 MB is suitable for most small to mid-range automation applications.

Can I use this card for firmware updates?

Absolutely. It supports firmware downloads as well as data backups and transfers.

Is the card hot-swappable?

The CPU must be powered down before inserting or removing the MMC.

Does it support program transfer between PLCs?

Yes, it can copy and transfer programs between compatible Siemens controllers.

Will this work with newer Siemens PLC models?

It is designed explicitly for legacy systems like the S7-300, C7, and ET 200; newer models may require different memory cards.

What happens if the MMC is not inserted into the CPU?

The S7-300 CPU will not operate without a compatible MMC inserted.

How durable is this memory card?

It is industrial-grade, resistant to vibration, and built for use in harsh automation environments.

Is support available if I have trouble using the card?

Yes, MRO Electric provides technical support, a 2-year warranty, and free shipping.

Contact Us Today For More Information About Siemens Products

Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at sales@mroelectric.com, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 6ES7953-8LM31-0AA0, take a look at more from our Memory Modules line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 6ES7953-8LM31-0AA0 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.