2. CNC Monitor Screen
2.7 Diagnosis
I - 179
2.7.4.5 Diagnosis Executed When an Emergency Stop Status Occurs
Whe
n the NC is put in an emergency stop status, the message "EMG" (emergency stop) is displayed in the
running status display area on the screen. At this time, the cause can be known.
Refer to "Appendix Messages during Emergency Stop (EMG)" for details of message.
(1) Check using the DIAGN screen
Set R21 in the DEVICE ( ) and
then press [INPUT] key.
R0021 (The cause of the emergency stop)
FEDCBA9876543210
(R)
File
register
Bit
Servo drive unit emergency stop output
Spindle drive unit emergency stop output
Door interlock, dog/OT arbitrary allocation device illegal
File area error
Built-in PLC program execution error
Q and Qr bus alarm arisen emergency stop
Power down handling error emergency stop
Power supply external emergency stop
Emergency stop in the safety circuit
Built-in PLC program S/W emergency stop output is
“
1
”
Contactor shutoff test
Control unit EMG connector Emergency stop state
Network error emergency stop
Target MELSEC stop state
Built-in PLC stop state
APLCemergencystopcausestate
R21
R0021
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