Fanuc · AC Spindle Motor Alpha i-Beta i Series Parameters
A RAM error is detected in the Serial Communication LSI. This indicates a problem with the internal memory of the communication interface.
Click steps to track your progress.
Power cycle the CNC control and the specific communication board.
Check voltage supply to the communication board (e.g., 5V, 3.3V).
Inspect the communication LSI chip for visible damage or overheating.
If possible, update or re-flash the firmware for the communication LSI.