If you use G7M-M256 in GM7 PLC, you can copy the program to another PLC.
1. Write program to flash memory of G7M-M256.
2. Change another PLC to RUN mode.
3. Connect G7M-M256 device to another PLC(it should be run mode).
4. After turn off power, and turn on power.
5. Then the program from G7M-M256 is copied to another PLC.