
EMCO WINNC SINUMERIK 810/820 T
D 21
PROGRAMMING
Description of M Commands
M Commands are switching or addidional functions
(miscalleneous). The M commands can stand alone
in a program block or together with other commands.
Commands of the same group cancel each other,
that means the M command programmed last can-
cels the previously programmed M command of the
same group.
Remark
The following pages describe the standard M com-
mands. Wheter these M commands are executable
depends on the type of the machine and the used
accessories.
M00 Programmed Stop
Unconditional
These command effects a stop in the execution of the
part program.
Main spindle, feed and coolant will be switched off.
The chip protection door can be opened without
triggering an alarm.
With "NC START" the program run can be
continued. After that the main drive will be switched
on with all values which were valid before.
M01 Programmed Stop
Conditional
M01 works like M00, but only if the function PRO-
GRAMMED STOP YES was switched on by softkey
in the menu PROGRAM CONTROL.
With "NC START" the program run can be
continued. After that the main drive will be switched
on with all values which were valid before.
M02 Main Program End
M02 works like M30.
M03 Main Spindle ON Clockwise
The spindle is switched on provided that a spindle
speed or cutting speed has been programmed, the
chip protection door is closed and a workpiece cor-
rectly clamped.
M03 must be used for all right-hand cutting or over-
head clamped tools, if machining occurs behind the
turning centre.
M04 Main Spindle ON
Counterclockwise
The same conditions as described under M03 apply
here.
M03 must be used for all left-hand cutting or normal
clamped tools, if machining occurs behind the turn-
ing centre.
M05 Main Spindle Off
The main drive is braked electrically.
At the program end the main spindle is automatically
switched off.
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