6ES7954-8LF04-0AA0, Siemens, SIMATIC S7 Memory Card 24 MB, memory card for CPU S7-1200/1500

Cat. no.: 6ES7954-8LF04-0AA0

Manufacturer: Siemens

On request

Our price excl. VAT: 226,84 €
incl. VAT 21 %: 274,48 €

Description

In stock · Stock items are shipped the next working day · Official Siemens distributor · Free technical support

Description · Parameters · Wiring · What else to buy · Documentation · FAQ

6ES7954-8LF04-0AA0 – SIMATIC S7 Memory Card 24 MB, for CPU S7-1200/1500, Siemens

6ES7954-8LF04-0AA0 is an original Siemens SIMATIC S7 memory card with a capacity of 24 MB, designed for CPUs of the S7-1200 series (including the G2 generation) and S7-1500.

The memory card serves as the CPU's load memory – it stores the entire project including comments and symbolic names, enables CPU firmware updates and serves as a so-called transfer card for replacing the CPU or transferring the program without connecting a computer.

Key advantages
Enables CPU replacement or program restoration without connecting TIA Portal.
Used for updating the CPU firmware S7-1200/S7-1500.
Stores the entire project including comments, symbolic names and program documentation.
Can be used as a program card (without a program stored in the CPU) or a transfer card (for a one-off transfer).
Technical specifications
Order number (MPN) 6ES7954-8LF04-0AA0
Manufacturer Siemens
Capacity 24 MB
Compatibility SIMATIC S7-1200 CPU (incl. G2) and S7-1500
Net weight 0.01 kg
Typical applications

Smaller capacities (4–24 MB) are fully sufficient for normal applications without extensive data archiving. Larger capacities (256 MB to 32 GB) are used when working with data logs, recipes or CPU web pages.

Which assembly it belongs to

The card belongs to an assembly with any SIMATIC S7-1200 CPU (including the G2 generation) or S7-1500. We recommend getting one for every CPU installed at a customer's site – it makes servicing easier without the need to carry a laptop with TIA Portal.

Technical specifications

Order number	6ES7954-8LF04-0AA0
Manufacturer	Siemens
Product series	SIMATIC S7 Memory Card
Capacity	24 MB
Compatibility	SIMATIC S7-1200 CPU (incl. G2) and S7-1500
Applications	Load memory, firmware update, transfer card

Quick start – replacing and using the card

1. Switch off the CPU supply (switch to STOP and disconnect the supply). 2. Open the memory card slot cover on the front of the CPU. 3. Insert the card in the correct orientation until it clicks into place. 4. Switch on the supply – the CPU automatically detects whether it is a program card, transfer card or firmware update. 5. Monitor the transfer status on the CPU LEDs or in TIA Portal (Online & diagnostics).

What else to buy for this card

The card is used together with any CPU SIMATIC S7-1200 G2. Recommended related components:

6ES7212-1AG50-0XB0 – CPU 1212C DC/DC/DC
Smaller CPU for smaller machines and switchboards.
6ES7214-1AH50-0XB0 – CPU 1214C DC/DC/DC
Larger CPU with more integrated I/O.
6ES7822-0AE25-0YA5 – STEP 7 Basic V21, programming software
Required for creating the project that is stored on the card.
SIMATIC S7-1200 G2 textbook – a guide to parameters and programming written in Czech
Explains when to use the memory card during servicing and commissioning.

Official Siemens documentation

The documents open directly in the manufacturer's sources and relate to the order number 6ES7954-8LF04-0AA0.

Frequently asked questions

How do I verify the right capacity?

Compare the order number 6ES7954-8LF04-0AA0 and the capacity of 24 MB with the requirements of your project (program size, number of recipes, data logging).

Is the card necessary for the CPU to run?

No, the CPU has its own internal memory for smaller projects. The card is only needed for larger projects, for firmware updates or when a transfer card is required.

Which capacity should I choose?

For normal machines without extensive data logging, 12–24 MB is enough. For data archiving, recipes or a web server with storage, choose 256 MB to 32 GB.

Is the card also compatible with older CPUs S7-1200?

Yes, this range of memory cards is common to CPUs S7-1200 (including the original generation and G2) and S7-1500.

TECHNOLINE is an official Siemens distributor. We supply with an invoice, technical support and help with choosing the correct variant.

Technical parameters

Objednací kód	6ES7954-8LF04-0AA0
Výrobce	Siemens

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Ask us about technical parameters, compatibility with your equipment, availability or a price for larger quantities. It helps if you tell us what application you need the product for — if it does not fit, we will recommend a more suitable type.

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