Fanuc 414 Servo Alarm indicates a detection related error in the digital servo system for the specified axis (in this case, the Z-axis). It is typically triggered when the CNC detects an abnormal condition on the servo amplifier, such as high current or a feedback issue. CNCpart.eu Common Causes
Check battery voltage (if absolute encoder): fanuc 414 servo alarm z axis detect error
Check Diagnostics: View DGN 200 or 204 on the CNC screen. If the OVC bit is set to 1, you likely have an overcurrent issue. Fanuc 414 Servo Alarm indicates a detection related
indicates high current on the first (L), second (M), or third (N) axis respectively Diagnostic Screen : On the CNC, view Diagnostic 200 view Diagnostic 200