HEIDENHAIN TNC 620 Programming Station User Manual

Programming Q Parameters | Principle and overview of functions
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HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
10.1 Principle and overview of functions
With Q parameters you can program entire families of parts in a
single NC program by programming variable Q parameters instead
of fixed numerical values.
Use Q parameters for e.g.:
Coordinate values
Feed rates
Spindle speeds
Cycle data
With Q parameters you can also:
Program contours that are defined through mathematical
functions
Make execution of machining steps depend on certain logical
conditions
Variably design FK programs
Q parameters are always identified with letters and numbers. The
letters determine the type of Q parameter and the numbers the
Q parameter range.
For more information, see the table below:
Q parameter
type
Q parameter range Meaning
Q parameters: Parameters affect all NC programs in the control’s memory
0 – 99 Parameters for the user, if there are no overlaps with the
HEIDENHAIN-SL cycles
100 – 199 Parameters for special functions on the control that can be read
by NC programs of the user or by cycles
200 – 1199 Parameters primarily used for HEIDENHAIN cycles
1200 – 1399 Parameters that are primarily used with manufacturer cycles when
values are given back to the user program
1400 – 1599 Parameters primarily used as input parameters for manufacturer
cycles
1600 – 1999 Parameters for users
QL parameters: Parameters only effective locally within an NC program
0 – 499 Parameters for users
QR parameters: Parameters permanently (remanence) affect all NC programs
in the control’s memory, even after a power interruption
0 to 99 Parameters for users
100 to 199 Parameters for HEIDENHAIN functions (e.g., cycles)
200 to 499 Parameters for the machine tool builder (e.g., cycles)

HEIDENHAIN TNC 620 Programming Station Specifications

General

Brand	HEIDENHAIN
Model	TNC 620 Programming Station
Category	Control Systems
Language	English