Description
Program backup / memory pack module for GM7 (GM7 classic) series PLCs; 256 KB program/memory pack used to store user program and data.
The Polar Energy Assessment:
The G7M-M256 is the legacy 256 KB program/memory pack (flash memory) for the GM7 family. It’s the removable memory module used to back up the PLC program, store recipes and retain user data; GM7 product literature references the M256 as the GM7 memory pack. Availability varies; distributors and surplus channels list it as an OEM part, and the GM7 manuals describe installation and backup procedures.
Pros
- Simple plug-in memory backup for GM7 controllers.
- Holds user program and data (256 KB capacity) for easy transfer and spares management.
Limitations
- Legacy part.
Typical use cases
- Program backup/restore, spare memory cartridge for field service, cloning program/data across multiple GM7 controllers for standardization.

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