Diagnosis Executed When An Emergency Stop Status Occurs - Mitsubishi Electric MELDAS C6 Instruction Manual

2.7.4.5 Diagnosis Executed When an Emergency Stop Status Occurs

When 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.
(1) Check using the DIAGN screen
Set R21 in the DEVICE (
then press
R0021 (The cause of the emergency stop)
Bit
State
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2. Screen Operation of A985GOT
) and
key.
INPUT
F E D C B A 9 8 7
1 1 1 1 1 1 1 1 1
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2.7 Diagnosis
R21
R0021
6 5 4 3 2 1 0
1 1 1 1 1 1 1 (0: EMG stop 1: Normal)
Internal PLC software stopped
Internal PLC no hardware
Internal PLC preparation incomplete
Internal PLC communication error
Internal PLC emergency stop output
Internal PLC software emergency stop output Y427 is
"1"
User PLC illegal code found
PLC high-speed process error
Door interlock, dog/OT arbitrary assignment device
illegal
Spindle drive unit emergency stop output
Servo drive unit emergency stop output
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