Siemens 6ES7953-8LL31-0AA0 SIMATIC S7 Micro Memory Card, 2 MB
2 MB Memory Capacity
Flash-EPROM Memory
6ES7953-8LL31-0AA0 datasheet
Place of Origin:
Germany
Brand Name:
Siemens
2 MB Memory Capacity
,Flash-EPROM Memory
,6ES7953-8LL31-0AA0 datasheet
Siemens 6ES7953-8LL31-0AA0
Product Overview
The 6ES7953-8LL31-0AA0 is a Siemens SIMATIC S7 Micro Memory Card with 2 MB capacity. Siemens identifies it for S7-300/C7/ET 200 systems and specifies 3.3 V Nflash technology. Official Siemens application documentation also lists this card as program memory in an ET 200S configuration.
Technical Specifications
View Technical Data
| Manufacturer | Siemens |
| Article Number | 6ES7953-8LL31-0AA0 |
| Product Family | SIMATIC S7 |
| Product Type | Micro Memory Card |
| Product Description | Micro Memory Card for S7-300/C7/ET 200, 3.3 V Nflash, 2 MB |
| Memory Technology | Flash-EPROM |
| Width | 24 mm |
| Height | 32 mm |
| Depth | 1.4 mm |
| Approximate Weight | 2 g |
| Classification – eClass 14 | 27-24-22-12 |
| Classification – ETIM 10 | EC000192 |
| Classification – UNSPSC 15 | 43-20-14-02 |
System Application & Service Scenarios
System Use
Used as program memory in supported SIMATIC S7-300/C7/ET 200 applications. Siemens documentation also identifies this 2 MB card in an ET 200S configuration and a SIMATIC TDC CPU555 hardware example.
When It Is Searched For
Maintenance teams may look for this exact card when an installed memory card is missing, physically damaged, suspected of memory failure, or needs to be replaced during controller maintenance.
Downtime Considerations
A memory-card issue can delay controller recovery or commissioning if the required program memory is unavailable. Confirm the controller model, card number and required project data before replacement.
Selection & Replacement Notes
Confirm the complete article number 6ES7953-8LL31-0AA0 and the required 2 MB capacity against the installed controller documentation. Siemens lists other Micro Memory Cards with different capacities; a different capacity or neighboring order number should not be treated as an automatic substitute. Check the controller-specific requirements and project backup before changing the installed card.
Frequently Asked Questions
1. Which Siemens systems are listed for this memory card?
Siemens identifies the card for S7-300/C7/ET 200 applications. Official application documents also show it in an ET 200S configuration.
2. What is the memory capacity of this card?
The specified memory capacity is 2 Mbyte.
3. What memory technology does it use?
The Siemens product description specifies 3.3 V Nflash, while the technical data identifies the memory type as Flash-EPROM.
4. What are the specified write endurance and data retention values?
The data sheet specifies at least 100,000 write/delete operations and at least 10 years of data retention after the final programming action.
5. What should be checked before ordering a replacement?
Verify the full article number, 2 MB capacity, controller model and the memory-card requirements in the applicable Siemens system documentation.
AMIKON Supply Support
Industrial Parts Sourcing, Kept Practical.
AMIKON supports industrial maintenance and automation procurement with part-number checking, order coordination and shipment preparation.
- Inspection: Product condition and applicable checks before dispatch.
- Packaging: Protective packing selected for the item and shipping route.
- Returns & DOA: Report arrival damage or defects promptly with photos and order details; assessment follows the agreed return terms.
- Warranty: 12-month warranty, subject to quotation and agreed supply terms.
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