CPU_FROM_SOFTWARE_INCOMPLETE_LOADING
CPU FROM Software Incomplete Loading
Fanuc · Alpha i series AC Servo Motor
What does CPU_FROM_SOFTWARE_INCOMPLETE_LOADING mean?
Loading of a software on the FROM (Flash Read-Only Memory) built into the CPU is incomplete. This can also indicate an error in the internal RAM write/read test at power-up or a general control circuit error, preventing proper system initialization.
Common Causes
- Incomplete software loading on the CPU's FROM
- Error detected in internal RAM write/read test at power-up
- Error detected in the control circuit
Repair Steps & Checklist
Click steps to track your progress.
- 1
Turn the power off, then back on
- 2
If this alarm recurs, replace the servo amplifier module
Verified technical data. Last updated: March 2026
Related Faults
Source: Fanuc Alpha i series AC Servo Motor