
28. DIAGNOSIS FUNCTIONS
B–64112EN/01
NC FUNCTION
268
The CNC checks the following itself.
D Abnormality of detection system
D Abnormality of position control unit
D Abnormality of servo system
D Overheat
D Abnormality of CPU
D Abnormality of ROM
D Abnormality of RAM
D Abnormality in data transfer between MDI
D Abnormality of part program storage memory
D Abnormality in tape reader read function
D Abnormality in data transfer between PMC
The CNC also checks other items.
Input/output signals from PMC to CNC, or vice versa, and inner status
of the CNC can be displayed.
Alarms specific to a machine tool can be added as alarms that can be
diagnosed on the failure diagnosis guidance screen.
The following alarms can be added.
1. External alarm messages (alarm numbers 1000 to 19999)
2. Macro alarms (#3000) (alarm numbers 3000 to 3200)
28.1
SELF DIAGNOSIS
FUNCTIONS
28.2
MACHINE ALARM
DIAGNOSIS