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          Apter Power can quote IC655MEM503 and provide official documentation for capacity checks, battery strategy, and a verified restore procedure.

        IC655MEM503

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        1001 reviews ｜ Need a Specific Revision?
        General Electric IC655MEM503 serves as a 16K RAM Memory Module that combines application and register resources for compatible Series Five CPUs.
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        Ships by Wednesday, October 28
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
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        Technical specifications for IC655MEM503

        • Manufacturer:
          General Electric
        • Part Number:
          IC655MEM503
        • Product Family:
          GE Intelligent Platforms
        • Product Type:
          16K RAM Memory Module
        • Stock:
          1
        • Memory Technology:
          Battery-backed CMOS RAM
        • Program Memory Capacity:
          16K
        • Register Expansion:
          Separate 16K RAM area
        • Register Enable:
          CPU jumper dependent
        • Data Retention:
          Supported by host battery backup
        • Programming Method:
          Editable in compatible Series Five CPU
        • Primary Purpose:
          Program and register-memory expansion
        • Commissioning Check:
          Program checksum and register map
        • Estimated shipping dimensions:
          7.2 × 5.1 × 1.3 cm
        • Tariff Code:
          8538900000
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Register Expansion Program RAM Battery Strategy Restore Verification

        Features:

        • Provides 16K of editable program RAM for compatible Series Five CPUs.
        • Adds a separate 16K register-expansion resource.
        • Battery retention and CPU jumper control support a managed memory configuration.
        The program and expanded registers are distinct resources and both matter to the running application.

        A host jumper defines access to the register expansion, making CPU settings part of the replacement record.

        External backup and checksum verification are essential because battery-backed RAM is not an archival copy.

        Apter Power can provide quotation support and official-document access for the General Electric IC655MEM503 16K RAM Memory Module.
        GE Fanuc IC655MEM503 16K RAM Memory Module Manuals, Datasheets, Links Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

        Using the additional Series Five register space

        • Separate area: The module includes 16K dedicated register RAM.
        • CPU setting: A host jumper controls access to the expanded range.
        • Application map: Programs must reference the intended register addresses.
        • Replacement check: Restore the original host configuration before testing.

        Maintaining the editable 16K application image

        • Online changes: RAM permits controlled program modification.
        • External copy: Keep a verified backup outside the controller.
        • Checksum: Compare the restored image with the approved version.
        • Capacity fit: Confirm the program and CPU support the memory option.

        Avoiding loss of retained memory

        • Host battery: Retention depends on the CPU backup source.
        • Maintenance timing: Complete the backup before power-down work.
        • Battery alarm: Resolve low-battery conditions before moving the module.
        • Recovery plan: Store the program and register documentation together.

        Checks after memory and CPU settings are restored

        • Jumper state: Confirm expanded-register enablement.
        • Program image: Verify checksum and software revision.
        • Register behavior: Inspect application-critical values and addressing.
        • Controlled run: Test the PLC function before production release.
        Description
        The General Electric IC655MEM503 is a Series Five 16K RAM Memory Module that adds program capacity and a separate 16K register-expansion area to a compatible CPU. Its two memory roles support a larger application while preserving writable register resources for operating data.

        A CPU jumper determines whether the expanded register area of IC655MEM503 is enabled. Preserving the application image without preserving that host setting can leave the controller with a different register map, even though the program memory itself has been transferred correctly.

        Battery backup retains the editable RAM contents of IC655MEM503. A maintenance copy must therefore include the ladder program and any values or data structures that depend on the expanded register addresses before the processor, battery, or memory module is disturbed.

        Post-replacement checks for IC655MEM503 should compare the CPU memory configuration, program checksum, and register references. That combination separates lost or corrupt RAM from a controller that is executing the right program against the wrong memory map.
        Alternative Names
        IC655-MEM503 IC655MEM-503 IC 655 MEM 503 GE Fanuc IC655MEM503 General Electric IC655MEM503 GE Fanuc Series Five IC655MEM503 IC655MEM503 16K RAM Memory Module 1C655MEM503
        Technical notes
        Preserve the IC655MEM503 program, expanded-register map, CPU jumper setting, checksum, and battery status before service.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Why can a CPU start but use wrong register values after IC655MEM503 replacement?
        Within the IC655MEM503 control arrangement, the expanded register area and CPU jumper configuration may not match the original map; compare host settings and register allocation before changing the program.
        What data should be backed up from IC655MEM503?
        Under normal IC655MEM503 service conditions, save the full program image, configuration, register-dependent application data, checksum, and the documented CPU jumper state.
        Why is battery condition important for IC655MEM503?
        When verifying IC655MEM503, both editable RAM resources rely on host backup support, so a weak or interrupted battery path can compromise retained information.
        Can IC655MEM503 replace a smaller memory module without program changes?
        While restoring IC655MEM503, only after confirming CPU support, program size, register-map expectations, and jumper configuration; larger capacity alone does not guarantee a compatible substitution.
        Why can IC655MEM503 expanded registers remain unavailable after the memory image is restored?
        During IC655MEM503 startup checks, inspect the CPU jumper and configuration that enables the 16K expansion area, then verify that the application uses the correct address range.
        How can accidental loss during IC655MEM503 service be prevented?
        In the IC655MEM503 signal path, create and validate an external backup before removing power or the memory module, and avoid relying on the installed battery as the only copy.
        What proves that IC655MEM503 restoration is complete?
        At the IC655MEM503 rack position, confirm the program checksum, register allocation, retained values required by the application, and a controlled PLC functional test.

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