Features:
- Editable RAM supports controlled program development and commissioning.
- Battery backup retains the installed image while the host support remains healthy.
- A write-protect jumper helps secure a validated application.
IC655MEM501 is interpreted differently by a Series Five CPU and by IC655APU500, so capacity must be stated with the host role.
RAM offers convenient editing but requires disciplined backup. Battery support and write protection should be checked before maintenance.
The plug-in format simplifies replacement only when the correct program image and jumper state are available.
For General Electric IC655MEM501 4K RAM Memory Module pricing and official technical documentation, contact Apter Power.
GE Fanuc IC655MEM501 4K 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.
How capacity changes with the installed host
- Series Five CPU: The module provides a 4K editable program resource.
- IC655APU500: The same option is used as 24K BASIC program memory.
- Image format: A CPU application and BASIC program are not interchangeable.
- Compatibility: Confirm the exact host before moving the module.
Protecting data held in battery-backed memory
- Battery support: Retention depends on the host backup source.
- Power-down work: Create a verified external copy before service.
- Storage risk: Do not assume an unplugged RAM module preserves data indefinitely.
- Recovery file: Keep the correct program and checksum with maintenance records.
Controlling changes to a validated program
- Jumper state: A hardware selection enables or blocks writing.
- Development: Allow edits only during controlled commissioning.
- Production: Protect the verified image after approval.
- Replacement: Copy the intended jumper state to the new installation.
Steps before restoring a replacement memory device
- Identify host: Confirm whether the module serves a CPU or APU500.
- Save program: Export and verify the existing application.
- Inspect contacts: Check the connector and seating surfaces.
- Reload and prove: Restore the image and validate operation before release.