HEIDENHAIN TNC 128 (77184x-02) - Manual (Page 248)

Programming: Q Parameters
8.12 Preassigned Q parameters
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TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014
Spindle status: Q110
The value of the parameter Q110 depends on the M function last
programmed for the spindle.
M function Parameter value
No spindle status defined Q110 = –1
M3: Spindle ON, clockwise Q110 = 0
M4: Spindle ON, counterclockwise Q110 = 1
M5 after M3 Q110 = 2
M5 after M4 Q110 = 3
Coolant on/off: Q111
M function Parameter value
M8: Coolant ON Q111 = 1
M9: Coolant OFF Q111 = 0
Overlap factor: Q112
The overlap factor for pocket milling is assigned to Q112.
Unit of measurement for dimensions in the program:
Q113
During nesting with PGM CALL, the value of the parameter Q113
depends on the dimensional data of the program from which the
other programs are called.
Dimensional data of the main program Parameter value
Metric system (mm) Q113 = 0
Inch system (inches) Q113 = 1
Tool length: Q114
The current value for the tool length is assigned to Q114.
The TNC remembers the current tool length even if
the power is interrupted.