Swap the feedback cables at the servo amplifier end. If the alarm moves to the other axis on the screen, the cable or amplifier port is bad. If the alarm stays on the original axis, the problem is down at the motor/encoder.
A "pulse miss" (interior) means the pulse coder internal signal is invalid, or the connection between the pulse coder and servo amplifier is faulty. Common Causes fanuc 366 alarm
The alarm is almost always related to hardware or environmental interference rather than programming errors. Primary triggers include: Swap the feedback cables at the servo amplifier end
: The pulse coder itself may be failing, or the internal circuitry of the servo amplifier that interprets the pulses could be faulty. Steps to Resolve A "pulse miss" (interior) means the pulse coder
The (often displayed as ALARM 366 or SYS ALARM 366 ) is a serial spindle software error . It indicates a communication or data integrity problem between the CNC control and the spindle amplifier over the serial spindle link.
If your machine has identical servo amplifiers and motors (e.g., swapping X and Y axis motors/drives), you can swap the encoder cables between the drives.