THE SYSTEM ALARM HAS OCCURRED,THE SYSTEM HAS STOPPED
![](/uploads/allimg/240509/113304H61-0.jpg)
When the Fanuc CNC system detects that the system cannot maintain normal operation, it will transfer to the system alarm screen.
When entering the system alarm state, the system will:
• Disconnect servo and spindle amplifier excitation
• Cut off communication with I/O LINK
When a system alarm occurs, the screen switches to the following screen. This screen is called the system alarm screen.
picture
System alarms can be divided into the following three types.
• Alarms detected by software
• Alarms detected by hardware
• Other alarms
1
Alarms detected by software
The CNC system software is mainly used to detect software anomalies. Typical exception reasons are:
• Detect processing/data inconsistencies based on internal status monitoring software
• Access outside data/command scope
• divide by zero
• Stack overflow
• Stack underflow
• DRAM sum check error
2
Alarms detected by hardware
Hardware anomalies are mainly detected by hardware. Typical exception reasons are:
• Parity errors (DRAM, SRAM, cache)
• Bus error
• Power alarm
• FSSB cable broken
3
Other alarms
Other reasons are:
• Alarms detected by peripheral software
• Servo software (watchdog, etc.)
• PMC software (I/O LINK communication abnormality, etc.) |