Principle And Overview Of Functions - HEIDENHAIN TNC 620 User Manual

9
Programming: Q Parameters
9.1

Principle and overview of functions

9.1 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 parameters:
QL parameters:
QR parameters:
300
Q parameter range
0 - 99
100 - 199
200 - 1199
1200 - 1399
1400 - 1599
1600 - 1999
0 - 499
0 - 499
Meaning
Parameters effect all NC programs in the TNC memory
Parameters for the user, if there are no overlaps with the
HEIDENHAIN-SL cycles
Parameters for system information on the TNC that can be read
by the NC programs of the user or by cycles
Parameters primarily used for HEIDENHAIN cycles
Parameters that are primarily used with manufacturer cycles
when values are given back to the user program
Parameters primarily used as input parameters for manufacturer
cycles
Parameters for users
Parameters only effective locally within an NC program
Parameters for users
Parameters that are nonvolatile on all NC programs in the
TNC memory, i.e. they remain in effect even after a power
interruption
Parameters for users
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015