PRODUCT DESCRIPTION
SIEMENS C79451-A3468-B527 - SIMATIC S7 Micro Memory Card (MMC)
This component is a critical data storage module designed for use with SIEMENS SIMATIC S7-300 and S7-400 programmable logic controllers. It provides non-volatile memory for program storage, data blocks, and system configurations, facilitating robust and reliable operation in industrial automation environments. Essential for PLC startup and continuous operation, it supports various industrial control applications requiring persistent data retention.
Technical Specifications:
- SERIES/FAMILY: SIMATIC S7-300 / S7-400
- COMPONENT TYPE: Micro Memory Card (MMC)
- ELECTRICAL SPECS:
- NOMINAL VOLTAGE: 3.3V DC (supplied by CPU backplane)
- POWER CONSUMPTION: Typically < 50mA during operation, < 1mA standby
- MECHANICAL/PHYSICAL:
- STORAGE CAPACITY: Varies by specific variant (e.g., 64KB, 128KB, 256KB, 512KB, 1MB, 2MB, 4MB, 8MB)
- FORM FACTOR: Compact, proprietary plug-in card
- DIMENSIONS: Standardized for SIMATIC S7 CPU memory card slots
- ENDURANCE: High write/erase cycles for industrial applications
- DATA RETENTION: > 10 years without power
- INTERFACE/CONTROL:
- INTERFACE TYPE: Proprietary Siemens interface for SIMATIC S7 CPUs
- DATA TRANSFER: Serial, high-speed for program loading and data access
- FUNCTIONALITY: Program storage, data block storage, system configuration, firmware updates, recipe management
- ENVIRONMENTAL/MOUNTING:
- IP RATING: Not applicable (internal component within PLC enclosure)
- OPERATING TEMPERATURE: 0 to 60 degrees Celsius (IEC 60068-2-1, -2-2, -2-14 compliant)
- STORAGE TEMPERATURE: -40 to 70 degrees Celsius
- MOUNTING STYLE: Slot-in, front-panel access on compatible CPUs
- COMPATIBILITY/APPLICATION:
- COMPATIBLE PLCS: SIEMENS SIMATIC S7-300 CPUs, SIEMENS SIMATIC S7-400 CPUs
- APPLICATIONS: Industrial process control, machine automation, discrete manufacturing, infrastructure automation, motion control systems