HEIDENHAIN CNC PILOT 640 - 2.11 Units - Special Operations; Program Beginning Unit

smart.Turn units | Units – Special operations
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HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017
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2.11 Units – Special operations
Program beginning unit
Refer to your machine manual.
The machine tool builder can provide you with machine-
dependent start units.
In the start unit, default values that are used in the following units
are defined. The start unit is called once at the beginning of the
machining section. You also directly specify Max. shaft speed,
Datum shift and the Tool change point for this program.
Unit name: Start / Called cycle: None
Limits form:
S0: Maximum speed for main spindle
S1: Maximum speed for driven tool
Z: Datum shift G59
TC point form (tool change point):
WT1: Tool change point
No axis (do not approach the tool change point)
0: Simultaneously
1: First X, then Z
2: First Z, then X
3: Only X
4: Only Z
5: Only Y
6: Simultaneous w/ Y
WX1: Tool change point in X (reference: distance of the slide
position as radius value from the machine datum)
WY1: Tool change point in Y (reference: distance of the slide
position from the machine datum)
WZ1: Tool change point in Z (reference: distance of the slide
position from the machine datum)