Siemens 6ES79521KY000AA0

Technical Parameters

High-Capacity Storage

Provides 8 MB of non-volatile Flash memory optimized for mid-range S7-300 CPUs , balancing cost and performance for moderate-scale automation projects.

Cross-Generation Compatibility

Functions with both MPI and PROFIBUS-DP CPUs, including legacy models discontinued after 2010.

Secure Data Retention

Implements AES-256 encryption for project backups, exceeding standard security protocols in earlier MMC cards.

Industrial Humidity Tolerance

Operates reliably at 98% relative humidity for wastewater treatment or food processing installations.

Fast Erase/Write Cycles

Achieves 5 ms/page erase speed for rapid firmware updates or project redeployment in time-sensitive maintenance windows.

Enhanced ECC Protection

Utilizes 3-bit Error Correcting Code (ECC) per 512-byte sector to mitigate data corruption from electromagnetic interference.

Backward-Firmware Support

Stores legacy firmware versions for rollback capability during compatibility conflicts with newer TIA Portal editions.

Key Features

The Siemens 6ES79521KY000AA0 combines reliability with advanced functionality tailored for automation:

High-Speed Data Transfer: With a 64 GB storage capacity and USB 3.0 interface, it enables rapid program uploads/downloads for SIMATIC S7-1200/1500 PLCs, reducing downtime during system updates.

Secure Data Protection: Features write protection and AES-256 encryption to prevent unauthorized access, ensuring compliance with industrial cybersecurity protocols.

Plug-and-Play Compatibility: Preformatted for Siemens PLCs, the Siemens 6ES79521KY000AA0 eliminates configuration hassles and supports hot-swapping in live systems.

Compatible Devices

The Siemens 6ES79521KY000AA0 seamlessly integrates with Siemens’ automation ecosystem:

SIMATIC Controllers: Direct compatibility with S7-1200, S7-1500, and ET 200SP PLCs, enabling backup storage for critical control programs.

HMI and SCADA Systems: Works with SIMATIC HMI Comfort Panels (e.g., KTP1200) and WinCC SCADA for centralized data logging and diagnostics.

Third-Party Integration: Supports FAT32/NTFS file systems, allowing cross-platform data exchange with non-Siemens devices like robotic arms or vision systems.

Practical Use Cases

The Siemens 6ES79521KY000AA0 excels in mission-critical automation scenarios:

Automotive Production Lines: Stores complex robotic welding sequences for BMW and Volkswagen assembly plants, ensuring uninterrupted 24/7 operations. Redundant backups prevent data loss during power surges.

Pharmaceutical Batch Control: Safeguards GMP-compliant recipes for tablet coating machines, with encryption preventing tampering in sterile environments.

Renewable Energy Farms: Logs turbine performance data in wind farms, enabling predictive maintenance via encrypted cloud synchronization.