Siemens 6ES7954-8LB00-0AA0 Memory Card

Reliable Flash Storage for S7-1200 and SINAMICS Applications

The 6ES7954-8LB00-0AA0 functions as a high-performance SIMATIC memory card for the S7-1200 PLC and SINAMICS drive families. This SD card serves as the load memory for your controller, storing user programs and project files securely . It uses reliable Flash-EPROM technology to retain data even after power loss. Furthermore, the card provides a convenient medium for transferring projects between multiple CPUs without a programming device.

Technical Specifications

The table below details the key technical parameters for the 6ES7954-8LB00-0AA0 memory card .

Parameter	Specification
Manufacturer	Siemens
Product Type	SIMATIC Memory Card (SD Card)
Memory Capacity	24 MB
Memory Technology	Flash-EPROM / Nflash
Voltage	3.3 V
Weight	Approx. 0.031 kg
Compatibility	S7-1200, S7-1500, SINAMICS

Key Functional Features

The 6ES7954-8LB00-0AA0 provides three primary functions for S7-1200 users . It serves as the CPU’s load memory, which means the CPU cannot run without this card inserted. It acts as a portable project transfer medium for copying programs to multiple controllers efficiently. Moreover, you can use this card to reset a CPU if you forget the access password. The card uses reliable Flash technology that ensures fast read and write operations for demanding industrial tasks .

Application and Integration

The 6ES7954-8LB00-0AA0 integrates seamlessly into S7-1200 and S7-1500 systems, fitting into the CPU’s dedicated memory card slot. The card supports firmware updates for S7-1200 CPUs when using the 24 MB version . It is important to note that you must only use a Siemens pre-formatted card; reformatting the card with Windows will permanently damage it and prevent further use . Always insert the card with the CPU in a powered-off state to avoid an unexpected CPU stop .