Siemens 6ES7954-8LC03-0AA0 SIMATIC S7 Memory Card 4 MB
Het item werd toegevoegd aan uw offerteaanvraag
Product Information
The Siemens 6ES7954-8LC03-0AA0 is a 4 MB Flash-EPROM memory card engineered for the SIMATIC S7 controller family, including S7-1200, S7-1500, and ET 200 CPU platforms. Operating at 3.3 V, this non-volatile memory media provides storage for user program code, symbol tables, data blocks, and system configuration parameter sets. Built for demanding industrial environments, it features long service reliability with an endurance rating of 500,000 write and erase cycles and an unpowered data retention capability of up to 10 years.
Integrating into Siemens TIA Portal (STEP 7 Basic and Professional), the memory card operates in one of three distinct modes: Program Card, Transfer Card, or Firmware Update Card. When set as a Program Card, the controller runs project files directly from the card. In Transfer Card mode, it automatically loads stored user projects into internal CPU memory upon power-up, enabling cable-free CPU swaps without requiring an on-site programming laptop. Crucially, formatting must always be executed through TIA Portal or a SIMATIC Field PG, as attempting to format the card using standard Windows Explorer corrupts its internal file structure. ABC Industrial Parts can assist maintenance teams with spare card preparation and configuration verification.
Diagnostic conditions such as missing cards, unformatted memory, or integrity faults are logged directly into the TIA Portal CPU diagnostic buffer and indicated physically via the host CPU ERROR and MAINT LEDs. If a host CPU replacement is required, transferring this card to the spare controller restores operational parameters immediately. When internal CPU or hardware faults occur, sourcing a tested replacement memory card or spare CPU through ABC Industrial Parts ensures swift restoration of machine operations with minimal system downtime.
Technical Specifications
| Manufacturer | Siemens |
| Part Number | 6ES7954-8LC03-0AA0 |
| Model / Type | SIMATIC S7 Memory Card 4 MB |
| Product Family | SIMATIC S7 |
| Component Type | Memory Card |
| Memory Capacity | 4 MB |
| Memory Technology | Flash-EPROM (3.3 V) |
| Write / Erase Endurance | 500,000 cycles |
| Data Retention | 10 years |
| Predecessor Part Number | 6ES7954-8LC02-0AA0 |
Programming and Configuration
The Siemens 6ES7954-8LC03-0AA0 4 MB memory card is configured using Siemens TIA Portal STEP 7 (Basic or Professional). Within the engineering environment, the operational role of the card can be defined as a Program Card, Transfer Card, or Firmware Update Card depending on application requirements.
Proper file system maintenance is critical for function. Formatting must strictly be executed within TIA Portal or using a SIMATIC Field PG. Performing a format operation through standard Windows Explorer damages the internal file structure, rendering the card unrecognized by SIMATIC S7 CPUs.
Diagnostics and Status Indication
System diagnostics for the 6ES7954-8LC03-0AA0 are logged directly within the host CPU. The TIA Portal CPU diagnostic buffer records event messages for card status, including missing card conditions, unformatted card errors, or memory read/write faults.
Visual status indication is provided via the host S7-1200, S7-1500, or ET 200 controller display LEDs. Illumination or flashing of the host CPU ERROR and MAINT LEDs signals memory card formatting errors, file system damage, or card access problems.
Replacement and Spare Part Considerations
The 6ES7954-8LC03-0AA0 serves as the direct successor and functional replacement for predecessor part number 6ES7954-8LC02-0AA0. Maintenance personnel can insert this 4 MB flash memory card into compatible S7-1200, S7-1500, or ET 200 CPUs as a seamless upgrade.
Using the memory card as a transfer medium simplifies emergency hardware replacement. Moving an existing programmed card into a replacement processor transfers project parameters, symbol tables, and program code automatically upon boot, eliminating the need for engineering laptops or programming cables on the plant floor.
Frequently Asked Questions
How should the Siemens 6ES7954-8LC03-0AA0 memory card be formatted?
Formatting must be performed exclusively within Siemens TIA Portal or on a SIMATIC Field PG. Formatting the card using standard Windows Explorer corrupts the internal file structure and renders the card unusable in SIMATIC CPUs.
What functional modes are supported by this 4 MB memory card?
Configured via TIA Portal, the card operates in three modes: Program Card (CPU executes code directly from the card), Transfer Card (automatically uploads project data into internal CPU memory upon boot), or Firmware Update Card.
Which CPU platforms are compatible with the 6ES7954-8LC03-0AA0?
The card is compatible with Siemens SIMATIC S7-1200, SIMATIC S7-1500, and SIMATIC ET 200 CPU platforms.
Is the 6ES7954-8LC03-0AA0 compatible with older card revisions?
Yes, it is the direct successor and functional replacement for predecessor part number 6ES7954-8LC02-0AA0.
What is the expected lifespan and retention rating of this card?
The 3.3V Flash-EPROM card is rated for a minimum of 500,000 write and erase cycles and maintains unpowered data retention for up to 10 years.
Take advantage of our exchange formula
A defective product does not have to be worthless. At ABC Industrial Parts, you can hand in defective products and immediately benefit from a discount on your new purchase. This is a smart way to save money while contributing to a circular economy.
Play it safe with our warranty conditions
Industrial plants prefer to keep running invariably, no matter what. Therefore, it is essential that you can rely on high-quality products and/or sustainable repairs. With our warranty conditions, you can count on certainty, whether you choose new, used or repaired products.
Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Siemens.
Product photos are for illustration purposes only and may differ from the actual product delivered.
Some of the content on this page was created with the help of AI. While we strive to provide accurate and up-to-date information, errors may occur.