2 Indicator Lamps
MITSUBISHI CNC
II - 8
2.1 Control Unit Ready
The CONTROL UNIT READY lamp indicates that the control unit is ready to run. The lamp goes OFF at emergency stop
or when an alarm occurs in the drive or operation block.
2.2 In Automatic Operation
The IN AUTO OPERATION lamp is ON from CYCLE START switch turning ON in the automatic operation mode
(memory, tape, or MDI) to the program end after M02 or M30 execution, reset, or emergency stop.
2.3 Automatic Operation Start Busy
The AUTO START BUSY lamp indicates that the controller is executing control in the automatic operation mode. It is ON
from the automatic operation start state entered when the CYCLE START switch is pressed in the automatic operation
mode (tape, memory, or MDI) to the automatic operation start end such as the automatic operation pause busy state
entered when the FEED HOLD switch is pressed or block completion stop (block stop).
2.4 Automatic Operation Pause Busy
The AUTO PAUSE lamp is ON from AUTO PAUSE switch turning on to AUTO START switch turning ON or when the
mode selection switch is changed from the automatic to manual mode during the automatic operation.
2.5 Return to Reference Position
Output is executed when the controlled axis arrives at the reference position when manual reference position return,
automatic reference position return, or reference position collation (check).
2.6 Alarm
The ALARM lamp goes ON when an alarm occurs during NC running.
2.7 M00
If M00 given in a program is executed during automatic operation, automatic operation stop is performed after execution
of the M00 block is completed. The M00 lamp is turned ON. (This depends on PLC processing.)
2.8 M02/M30
When M02 or M30 is executed during automatic operation, the NC unit reaches the program end and the M02 or M30
lamp is turned ON. (This depends on PLC processing.)
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