Siemens 6ES7291-8GH23-0XA0 SIMATIC S7-200 Memory Module MC 291 (256 KB)

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Core Advantages

Expanded Program and Data Storage for S7-200 Systems
The MC 291 provides 256 KB of Flash-EPROM storage for storing the PLC project, data logging records, and recipe management data. This allows users to expand the storage capacity of S7-22X CPUs beyond the onboard memory.

Plug-In Installation in CPU Memory Slot
The memory cartridge is designed to plug directly into the memory module receptacle of the S7-22X CPU. This integrated design eliminates external wiring and simplifies installation, allowing the CPU to recognize the cartridge automatically.

Flash-EPROM Technology for Data Retention
The module uses Flash-EPROM memory technology, which provides non-volatile storage without requiring battery backup. Program and data are retained even during power interruptions, ensuring reliability in industrial environments.

Essential for Recipe Management and Data Logging
For applications requiring recipe storage, production data logging, or archival functions, the MC 291 provides the necessary memory capacity. It enables users to store multiple recipes and log process data directly on the CPU.

Program Transfer and Backup
The memory cartridge can be used to transfer programs between identical CPU models, enabling quick restoration or cloning of PLC programs during maintenance or machine duplication.

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