SV0303
APC ALARM: FRAMING ERROR
Fanuc · αi Series Servo Amplifier
What does SV0303 mean?
A framing error occurred in the data transfer from the absolute-position detector, preventing the system from obtaining the correct machine position. This problem is indicative of a defect in the absolute-position detector, its cable, or the servo interface module.
Repair Steps
Verified technical data. Last updated: March 2026
Source: Fanuc αi Series Servo Amplifier