Industrial PLC Program Storage Solution – SIEMENS 6ES7951-1KM00-0AA0 | SIMATIC S7-400
Where This Product Is Used
The SIEMENS 6ES7951-1KM00-0AA0 is a 4 MB Flash EPROM memory card designed exclusively for the SIMATIC S7-400 programmable logic controller platform. It is widely deployed across demanding industrial environments where reliable, non-volatile program and data retention is critical:
- Automotive manufacturing – body-in-white welding lines, paint-shop conveyors, and press-shop automation
- Chemical & petrochemical plants – DCS-integrated PLC nodes controlling reactor sequencing and safety interlocks
- Power generation & utilities – turbine control, substation automation, and grid-tie protection systems
- Steel & metals processing – rolling-mill drives, furnace temperature control, and coil-handling lines
- Water & wastewater treatment – SCADA-linked pump stations and dosing control panels
- Pharmaceutical production – GMP-compliant batch control and CIP/SIP sequence management
- Airport & logistics infrastructure – baggage-handling systems and automated storage/retrieval (AS/RS)
Technical Specifications
| Part Number (SKU) | 6ES7951-1KM00-0AA0 |
| Brand / Manufacturer | SIEMENS AG |
| Product Family | SIMATIC S7-400 |
| Memory Type | Flash EPROM (non-volatile) |
| Capacity | 4 MB |
| Function | Program & data storage (load memory) |
| Compatible CPUs | All SIMATIC S7-400 CPU modules (e.g., CPU 412, 414, 416, 417) |
| Form Factor | Plug-in memory card (SIMATIC format) |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | −40 °C to +85 °C |
| Data Retention | > 10 years without power |
| Write Cycles | ≥ 100,000 (typical Flash EPROM) |
| Weight | Approx. 847 g (packaged) |
| HS Code | 8473.30 |
| Country of Origin | Germany |
Why Engineers Specify This Model
- Non-volatile Flash storage – program and data survive power loss without a backup battery, eliminating a common failure point in legacy RAM-based systems.
- Plug-and-play replacement – the card is hot-swappable on supported S7-400 CPUs, enabling fast program transfer during planned maintenance windows.
- 4 MB capacity – sufficient for large structured control programs (SCL, LAD, FBD) with extensive data blocks, typical in process and batch applications.
- Long data retention – >10-year retention ensures program integrity across extended plant shutdowns or spare-part storage periods.
- OEM-identical form factor – direct drop-in for existing S7-400 racks; no hardware modification or firmware update required.
Complete System Bill of Materials
For a fully operational SIMATIC S7-400 control node, engineers typically pair this memory card with:
- SIMATIC S7-400 CPU (e.g., 6ES7414-2XK05-0AB0 CPU 414-2 or 6ES7416-3XR05-0AB0 CPU 416-3)
- S7-400 Power Supply Module (e.g., 6ES7407-0KA02-0AA0 PS 407 10A)
- S7-400 Rack (e.g., 6ES7400-1JA01-0AA0 UR2 Universal Rack)
- Digital I/O modules (SM 421 / SM 422 series)
- PROFIBUS-DP or PROFINET communication module (CP 443 series)
- STEP 7 / TIA Portal engineering software license
Compliance & Industry Standards
- CE Marked – EU Machinery Directive & EMC Directive compliant
- UL Listed – suitable for North American industrial installations
- IEC 61131-2 – programmable controller hardware standard
- RoHS 2 (2011/65/EU) – restricted hazardous substances compliant
- ATEX / IECEx – consult project engineer for hazardous-area zone classification
Quality Assurance & Sourcing
Every 6ES7951-1KM00-0AA0 unit shipped by Konmask.com undergoes the following verification process:
- Visual inspection of housing, label, and connector pins
- Authenticity cross-check against SIEMENS product identification markings
- Functional read/write test where applicable
- Anti-static packaging with humidity indicator card
- Traceable documentation available upon request (test report, CoC)
We source exclusively from authorized distributors and verified surplus channels. Counterfeit-free guarantee backed by our return policy.
How to Source This Part
- Add 6ES7951-1KM00-0AA0 to your cart and proceed to checkout.
- For bulk orders (>5 units) or project BOM inquiries, email support@konmask.com for a volume quote.
- Lead time: in-stock units ship within 1–3 business days; ETA confirmed at order.
- Export documentation (commercial invoice, packing list, CO) provided for international shipments.
Application-Specific FAQ
Q: Is 6ES7951-1KM00-0AA0 compatible with S7-300 CPUs?
A: No. This card is designed exclusively for the SIMATIC S7-400 platform. For S7-300, refer to the 6ES7951-0KD00-0AA0 series.
Q: Can I use this card to transfer programs between two S7-400 CPUs?
A: Yes. The card can be programmed via STEP 7 / TIA Portal and physically moved to a target CPU for program upload — a common commissioning practice.
Q: Does the card retain data after the CPU is powered off?
A: Yes. Flash EPROM is non-volatile; no battery is required to maintain stored programs or data blocks.
Q: What is the maximum program size this card supports?
A: Up to 4 MB of load memory, accommodating large OB/FB/FC/DB structures typical in process automation projects.
Q: Is a warranty included?
A: Konmask.com provides a 12-month warranty against manufacturing defects. Contact support for RMA procedures.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
