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      6ES7954-8LC02-0AA0

      Flash Memory Card
      In Stock
      Ships by Tuesday, October 20
      Fast Shipping Available

      Product Describe：

      Siemens 6ES7954-8LC02-0AA0 is a 4 MB, 3.3 V Flash SIMATIC S7 memory card for supported S7-1x00 CPU and SINAMICS installations. In the S7-1200 V4.2 workflow, its configured role determines whether it transfers a project to internal load memory or remains installed as external program memory.

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      Technical specifications Information Technical notes FAQ

      Technical specifications for 6ES7954-8LC02-0AA0

      Technical specifications for 6ES7954-8LC02-0AA0

      • Manufacturer:
        Siemens
      • Product Category:
        PLC Systems
      • Spare Part Number:
        6ES7954-8LC02-0AA0
      • Estimated shipping dimensions:
        9×11.4×0.03cm
      • Weight:
        0.02 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        Germany
      • Memory-card family:
        SIMATIC S7
      • Flash capacity:
        4 MB
      • Flash voltage:
        3.3 V
      • Memory technology:
        Flash
      • Manufacturer-listed host scope:
        S7-1x00 CPU / SINAMICS; verify the exact host and firmware
      • S7-1200 memory-card requirement:
        Pre-formatted SIMATIC memory card
      • S7-1200 configured card roles:
        Transfer card or program card
      • Transfer-card destination in S7-1200:
        CPU internal load memory
      • Program-card function in S7-1200:
        External load memory
      • Program-card retention in S7-1200:
        Must remain in the CPU during operation
      • S7-1200 insertion during RUN:
        CPU transitions to STOP
      • Card write protection:
        Lock-position switch
      • PC preparation interface:
        SD card reader/writer with STEP 7
      • Card-type configuration in STEP 7:
        Memory card Properties / Card type
      • Required protected files:
        __LOG__ and crdinfo.bin
      • Operating-system formatting:
        Windows formatter must not overwrite the SIMATIC format
      • S7-1200 program-card removal:
        Loss of external load memory; CPU enters STOP
      • Project content copied to the card:
        Code blocks, data blocks, technology objects and device configuration
      • Startup selection in copied project:
        STOP, RUN or previous mode; configured for the actual CPU
      • Empty-card copy behavior in S7-1200:
        Depends on Disable copy from internal load memory to external load memory setting
      • Card handling protection:
        Grounded ESD precautions; conductive storage container
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      Siemens 6ES7954-8LC02-0AA0 is a 4 MB, 3.3 V Flash SIMATIC S7 memory card for supported S7-1x00 CPU and SINAMICS installations. In the S7-1200 V4.2 workflow, its configured role determines whether it transfers a project to internal load memory or remains installed as external program memory.
      • Provides the exact 4 MB SIMATIC Flash storage option
      • Retains the SIMATIC-specific card format
      • Supports distinct S7-1200 transfer and program-card workflows
      • Uses a physical Lock switch for write protection

      Card capacity is not CPU work-memory capacity. Match the complete order number, card contents, configured role and project size to the installed host; the S7-1200 procedures below are not universal operating instructions for every SINAMICS or S7 CPU.

      Important Notice: Card insertion can stop a running S7-1200 CPU. Preserve the protected card files and verify the program-card versus transfer-card role before return to service; 4 MB does not establish that every firmware package will fit.

      Siemens 6ES7954-8LC02-0AA0 Manuals & Downloads
      Siemens 6ES7954-8LC02-0AA0 Technical Reference (PDF)Siemens 6ES7954-8LC02-0AA0 Manufacturer Manual Excerpt (PDF)

      The technical reference explains the exact 4 MB card identity and its S7-1200 preparation and load-memory workflows. The manufacturer excerpt preserves 17 unchanged original pages, including the exact ordering tables; it is not the complete system manual.

      S7-1200 project transfer
      Transfers an approved project to internal load memory; remove the transfer card after the documented copy sequence.
      S7-1200 external program memory
      Keeps the application in external load memory with the configured program card retained in the CPU.
      Controlled card preparation
      Uses the STEP 7 card-reader workflow while retaining the SIMATIC format and protected card files.
      Exact 4 MB card renewal
      Restores the identified storage option after checking the host firmware, project footprint and contents of the replacement card.
      Before handling Siemens 6ES7954-8LC02-0AA0, identify the installed host, configured card role, project revision and current machine state.
      1
      Place the machine or process in a safe maintenance state; card insertion can force an S7-1200 CPU into STOP.
      2
      Use grounded ESD controls and keep the card in a conductive storage container when not installed.
      3
      Check the Lock switch before a write operation; write-protected cards can cause recipe or data-log errors.
      4
      Do not format the card with Windows tools or delete the protected __LOG__ and crdinfo.bin files.
      5
      Back up required project and process data before clearing old card contents under an authorized service procedure.
      6
      Choose Transfer or Program in STEP 7 for the intended S7-1200 workflow and verify the project's startup mode.
      7
      Retain a program card during operation; remove a transfer card only after its completed copy sequence.
      8
      After evaluation, check the actual CPU diagnostics, installed program revision and intended process response before release.

      Technical notes

      Technical notes

      Do not overwrite the SIMATIC card format with Windows formatting tools or delete the protected __LOG__ and crdinfo.bin files. Put the controlled process in a safe state before card insertion or removal, and verify the configured card role and available space against the actual CPU project.

      FAQS

      • Does the 4 MB on 6ES7954-8LC02-0AA0 enlarge the CPU's work memory?
        The 4 MB describes card storage, not a change to the CPU's code/data work memory. In S7-1200 program-card use it supplies external load memory; CPU processing and work-memory limits remain properties of the installed CPU.
      • When should a transfer card be removed, and when must a program card stay installed?
        A transfer card is removed after the project has been copied to internal load memory and before the final return to RUN. A program card must remain installed because it holds external load memory; removing it stops the CPU.
      • Can a blank card change the program's storage location without a STEP 7 download?
        For S7-1200, evaluation of a blank card can copy internal load memory to a program card and erase the internal copy. The Disable copy from internal load memory to external load memory setting changes that blank-card behavior. Check this setting before inserting an empty replacement.
      • Which files must remain when an S7-1200 card is prepared for reuse?
        Keep __LOG__ and crdinfo.bin. They are protected card files, not old application data. Clearing obsolete project, recipe or log contents must preserve these files and the SIMATIC card format.
      • Will a locked card always prevent the S7-1200 from powering up?
        Not necessarily. A write-protected card generates a diagnostic message at the next power-up, while recipe or data-log instructions may fail when they need to write. Check the physical Lock switch rather than interpreting startup alone as proof of write access.
      • Can a V3.0 transfer project be inserted unchanged into an S7-1200 V4.0 CPU?
        No. That program version is not compatible with the later CPU workflow described here. Convert the device configuration in TIA Portal and prepare a valid project for the target CPU instead of treating a matching card capacity as project compatibility.
      • Does copying a project to the card also copy its force values?
        The copied program contains program blocks, technology objects and device configuration, but not force values. Existing force jobs and load-memory state need separate review before preparing or replacing a card.
      • Is this 4 MB card large enough for every firmware update?
        Capacity alone does not establish that. Compare the exact host's update package and card requirements with the available space. Preserve the SIMATIC format and follow the host-specific update sequence; do not import a larger memory-card capacity into this order number.
      Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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