SV0301
APC ALARM: COMMUNICATION ERROR
Fanuc · αi Series Servo Amplifier
What does SV0301 mean?
The absolute-position detector experienced a data transfer communication error, preventing the system from obtaining the correct machine position. This issue is typically caused by a defect in the absolute-position detector, its connecting cable, or the servo interface module.
Repair Steps
Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier