Indicator Lamps; Nc Unit Ready; Automatic Operation Busy; Automatic Operation Start Busy - Mitsubishi Electric MELDAS C6 Instruction Manual

2. Indicator Lamps

2.1 NC Unit Ready

The NC UNIT READY lamp indicates that the NC unit is ready to run. This will light approx. one
second after the NC power is turned ON. The lamp is turned OFF at emergency stop or when an
alarm occurs in the drive or operation block.

2.2 Automatic Operation Busy

The IN AUTO OPERATION lamp is ON from CYCLE START switch turning on in the automatic
operation mode (Memory, or MDI) to the program end after M02 or M30 execution, reset, or
emergency stop.
2.3 Automatic Operation Start B
The AUTO START lamp indicates that the NC unit 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 (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 FEED HOLD switch turning on to CYCLE START switch turning
on or when the MODE SELECT switch is changed from the automatic to manual mode during the
automatic operation.

2.5 Return to Reference Point

Output is executed when the controlled axis arrives at the reference point during manual or automatic
reference point return.

2.6 NC Alarm

The NC ALARM lamp is turned ON when an alarm occurs during NC operation.

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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2. Indicator Lamps
2.1 NC Unit Ready
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