SIEMENS 66ES7954-8LC03-0AA0

The 6ES7954‑8LC03‑0AA0 addresses the essential need for stable, dependable program and data storage in industrial automation systems using SIMATIC S7‑1×00 CPUs or SINAMICS drives. In many PLC or drive installations, storing user programs, configuration parameters, and critical data in volatile memory can risk data loss in power failures or system resets. This memory card solves that problem by providing 4 MB of non‑volatile Flash‑EPROM storage. Once data is written, it remains preserved for at least 10 years, even without power — ensuring your logic, configuration, and firmware remain intact. nexinstrument.com+2teknihaus.com+2

With up to 500,000 write/erase cycles, the card is built for frequent updates — ideal when commissioning systems, updating logic, or versioning code. Its compact MMC form factor makes it easy to insert and replace, enabling quick backups, duplication, or transfer of programs between devices. Compared to external USB drives or volatile memory, this Siemens card is purpose‑built for industrial automation — designed to resist shocks, temperature variation, and deliver reliable performance under demanding conditions. Using this memory card means reduced downtime, cleaner configuration management, and safer, long-term control of automated systems in factories, manufacturing lines, or process plants. mall.industry.siemens.com+2jc-electronics.com+2