840D/828D SINUMERIK Operate Page 5
B501
B501
Notes
Switching commands
Section 4
There are different commands to control the direction of rotation of the
work spindle.
There could be some more additional commands for the additional func-
tions like cooling circuits, clamping devices, auxiliary functions and running
of the program.
But the presence of these additional functions depends entirely on the
technology and type construction of the machine.
The following list should be considered as an extract:
Instruction Meaning
M00 Programmed Halt
M03 Work spindle ON, clockwise
M04 Work spindle ON, anti-clockwise
M05 Work spindle Halt (however, the program continues)
M06 Tool change
M08 Coolant ON
M09 Coolant OFF
M30 End of program; jump back to the start of the pro-
gram
Programming example: Explanation:
N10 T1; Face mill
N20 M6 Tool change
N30 G94 G97 F600 S2500 D1 v
f
= 600 m/min, n = 2500 min
-1
N40 M3 M8 Spindle ON clockwise, coolant ON
…..
N90 M30 End of program
(Further functions will be found in the annexure to this manual)
Effect of the switching commands M3 and M4
Example Milling Example Turning
M3
M4
viewing direction
M4
M3
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