Actually, I saw this in my research. As @Jermuk said, the vibration crossed a certain limit and generated an alarm. It looks like PdM. My approach is to determine the date and point of the failure based on anomalies. For this, a lot of information such as current sensors, cutting tool information, vibration information needs to be processed. But the need for this information is machine-based. So something is needed that can easily aggregate data and communicate with PdM. There MC comes to my aid 🙂