Siemens 6ES79538LF300AA0 Memory Card Mmc Plc Module

Product Description

The SIEMENS 6ES79538LF300AA0 is a SIMATIC Micro Memory Card (MMC) designed for use with Siemens S7-300 series programmable logic controllers. This compact solid-state storage module retains PLC programs, data blocks, and configuration files without requiring a battery backup, making it a reliable non-volatile storage solution for industrial automation applications. Weighing just 0.03 pounds and measuring 10.6 x 9.3 x 0.8 inches in packaging dimensions, it is a direct plug-in component handled by automation technicians and controls engineers during commissioning, program transfers, and controller replacements.

This memory card is used in industrial control environments where S7-300 CPUs require external program storage or data logging. Typical installation scenarios include manufacturing cells, process control panels, and building automation systems where a licensed controls technician or systems integrator is responsible for PLC programming and maintenance. The card supports program upload and download operations directly through the CPU slot without additional hardware interfaces.

Key Features

• Non-volatile MMC storage retains data without battery backup
• Direct plug-in installation into compatible S7-300 CPU card slots
• Stores PLC programs, data blocks, and configuration files
• Compact form factor for use in space-constrained control panels
• Solid-state design with no moving parts for long service life in industrial environments

Compatibility

Designed as an OEM-style replacement memory card for compatible Siemens S7-300 series PLC CPU modules that accept the standard MMC form factor.

Installation Notes

Installation and programming of PLC memory cards should be performed by a qualified controls technician or licensed automation engineer. Always power down the PLC and follow the controller manufacturer lockout procedures before inserting or removing the memory card. Avoid touching the card contacts and store the card in its protective case when not in use. Verify CPU compatibility and firmware version requirements before transferring program data to the card.

Technical Specifications

• Package Weight: 0.03 pounds
• Package Dimensions (L x W x H): 10.6 x 9.3 x 0.8 inches
• UPC: 88762144543

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 6ES79538LF300AA0