The , typically displayed as SV0366: n AXIS: PULSE MISS (INT) , indicates a communication or detection error within the built-in pulse coder of the specified axis. This occurs when the internal feedback system fails to track the expected number of pulses, suggesting a physical or electrical interruption in the encoder signal. Top Troubleshooting Steps
If the alarm occurs primarily at high speeds, the internal photo-diode may be failing. Loose Connections fanuc 366 alarm
The CNC controller expects a continuous, steady stream of data (pulses) from the motor's encoder to track its position. When the controller "misses" these pulses, it triggers the 366 alarm to prevent the machine from moving inaccurately or crashing. Fanuc 366 Alarm The , typically displayed as