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Siemens 6ES7953-8LL31-0AA0 is a 3.3 V Nflash SIMATIC Micro Memory Card with 2 MB capacity for documented S7-300, C7 and ET 200 CPU applications.
The complete article number and 2 MB capacity must match the receiving CPU and controlled project. Never initialize, overwrite or exchange a memory card without an approved backup and recovery plan.
Record the card label, CPU article and firmware, STEP 7 project version, hardware configuration, protection settings and current diagnostic state. Validate the backup offline, insert the card with power removed where required and test the complete startup sequence.
6ES7953-8LL31-0AA0 is the 2 MB, 3.3 V Nflash Micro Memory Card execution. Match the complete article and capacity before use.
Confirm the S7-300, C7 or ET 200 CPU article, firmware, supported card size and STEP 7 project before transferring any data.
Create and validate the controlled backup, preserve write protection and version records, then verify CPU startup and diagnostics after insertion.
Siemens identifies 6ES7953-8LL31-0AA0 as a 3.3 V Nflash Micro Memory Card with 2 MB capacity. The documented memory technology supports at least 100,000 write or delete cycles.
The card is used with documented S7-300, C7 and ET 200 CPUs. Confirm CPU firmware and project compatibility, preserve the validated backup and treat the card contents as controlled machine software.
Active / Available from OEM
Siemens lists 6ES7953-8LL31-0AA0 as PM400 Product available with phase-out started. Confirm the complete article and revision, receiving-system compatibility, condition, availability and included items in the written quotation.