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IC655MEM512

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General Electric IC655MEM512 is an 8K/24K EPROM Memory Module for fixed program retention in supported Series Five hosts.
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Technical specifications for IC655MEM512

  • Manufacturer:
    General Electric
  • Part Number:
    IC655MEM512
  • Product Family:
    GE Intelligent Platforms
  • Product Type:
    8K/24K EPROM Memory Module
  • Stock:
    1
  • Memory Technology:
    UV-erasable EPROM
  • CPU Program Capacity:
    8K
  • APU500 Program Capacity:
    24K
  • Nonvolatile Retention:
    No battery required for the programmed image
  • Normal Online Editing:
    Not supported
  • Erase Method:
    Ultraviolet exposure using approved process
  • Programming Environment:
    Compatible equipment including IC655APU500
  • Primary Use:
    Fixed validated program storage
  • 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 Fixed Program Role Capacity by Host Erase & Program Installation Proof

Features:

  • Provides a fixed, nonvolatile EPROM program image.
  • Offers host-dependent capacity for Series Five CPU or APU500 use.
  • Supports disciplined offline erase, program, verify, and label control.
IC655MEM512 avoids battery dependence for the stored program but cannot accept ordinary online changes.

Capacity depends on whether the device serves a CPU or the ASCII/BASIC module, so the host must be recorded with the image.

A correct part number is only half of the replacement: the programmed contents and checksum must also match.

For pricing and official documentation for the General Electric IC655MEM512 8K/24K EPROM Memory Module, consult Apter Power.
GE Fanuc IC655MEM512 8K/24K EPROM 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.

When EPROM is preferred over editable RAM

  • Validated image: Use a fixed program after engineering approval.
  • Nonvolatile storage: The programmed code does not depend on a backup battery.
  • No online edit: Operational changes require a new programming cycle.
  • Configuration control: Treat the device label and checksum as part of the release.

Interpreting the memory option correctly

  • CPU use: Compatible Series Five CPU service provides 8K.
  • APU500 use: The ASCII/BASIC module uses 24K.
  • Host identity: Do not move images between roles without validation.
  • Program format: CPU ladder and BASIC applications are different artifacts.

Handling the UV EPROM workflow

  • Full backup: Save the approved source before erasure.
  • UV erase: Use the specified process to clear the device.
  • Programming: Load and verify the complete intended image.
  • Protection: Store and label programmed devices to prevent mix-ups.

Checks after fitting a programmed device

  • Part and host: Confirm model and intended equipment.
  • Checksum: Compare with the approved application record.
  • Writable data: Restore separate RAM or register values if required.
  • Functional test: Run a controlled sequence before production.
Description
General Electric IC655MEM512 is an 8K/24K EPROM Memory Module that provides fixed nonvolatile program storage for compatible Series Five hosts. A Series Five CPU uses it as an 8K program device, while IC655APU500 addresses the same option as 24K of BASIC program space.

The EPROM in IC655MEM512 is not rewritten during normal controller operation. Erasure requires the approved ultraviolet process and the device must then be programmed with compatible equipment; the Series Five documentation identifies the IC655APU500 environment for this memory work.

A validated, frozen application can be deployed repeatedly with IC655MEM512 without relying on a retention battery. Because the physical package does not identify whether its contents belong to a CPU or an ASCII/BASIC program, the source file, checksum, label, and intended host role must remain together in the maintenance record.

After IC655MEM512 is installed, the running controller should be compared with the approved EPROM image and any required writable data should be confirmed in its proper separate memory. A rejected online edit is expected behavior for fixed program storage, not evidence that the module has failed.
Alternative Names
IC655-MEM512 IC655MEM-512 IC 655 MEM 512 GE Fanuc IC655MEM512 General Electric IC655MEM512 GE Fanuc Series Five IC655MEM512 IC655MEM512 8K/24K EPROM Memory Module 1C655MEM512
Technical notes
Label IC655MEM512 with host, image checksum, program revision, and programming date; retain the verified source before any erase cycle.
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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.
Why can an IC655MEM512 program not be changed online?
During a controlled IC655MEM512 test, EPROM is fixed after programming; erase and reprogram it with the approved process instead of treating the write failure as a hardware fault.
Why is IC655MEM512 capacity listed differently for CPU and APU500 use?
When reviewing IC655MEM512 compatibility, the compatible Series Five CPU addresses it as 8K program memory, while the ASCII/BASIC module uses the device as a 24K program option.
What must be saved before erasing IC655MEM512?
At the IC655MEM512 output stage, retain the verified source file, checksum, host identity, program revision, and a recovery copy because UV erasure removes the entire programmed image.
Can IC655MEM512 be installed immediately after another unit is removed?
Across the IC655MEM512 installation, first confirm that the EPROM contains the correct image for the exact host and application; matching hardware does not guarantee matching program content.
With IC655MEM512, why might an EPROM replacement start with missing adjustable values?
When isolating an IC655MEM512 fault, fixed program memory does not necessarily contain runtime data expected in writable RAM or registers; restore those resources through the application procedure.
How should IC655MEM512 be labeled?
During an IC655MEM512 wiring check, include model, intended host, application or BASIC program revision, checksum, and programming date to prevent image mix-ups.
What proves a newly programmed IC655MEM512 is ready?
At the IC655MEM512 interface, verify the programmed image against the source, install it in the intended host, and complete a controlled functional test without attempting online edits.