HEIDENHAIN TNC 620 Programming Station

Programming Qparameters | Principle and overview of functions
Q parameter types
Q parameters for numerical values
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to99 Parameters for the user, if there are no overlaps with the
HEIDENHAIN-SL cycles
These parameters have a local effect within so-called
macros and OEM cycles. This means that changes are
not returned to the NC program.
For this reason, use the Q parameter range 1200 to
1399 for OEM cycles!
100to199 Parameters for special functions on the control that can be read by
NC programs of the user or by cycles
200to1199 Parameters primarily used for HEIDENHAIN cycles
1200to1399 Parameters primarily used for OEM cycles
1400to1999 Parameters for users
QL parameters: Parameters only effective locally within an NC program
0to499 Parameters for users
QR parameters: Parameters are retained in all NC programs in the control’s
memory, including 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)
QR parameters will be included in backups.
If the machine tool builder did not define a specific path,
the control will save the QR parameter values in the
following path: SYS:\runtime\sys.cfg. This partition will
only be backed up in full backups.
Machine tool builders can use the following optional
machine parameters to specify the paths:
pathNcQR (no. 131201)
pathSimQR (no. 131202)
If the machine tool builder used the optional machine
parameters to specify a path on the TNC partition, you
can perform a backup with the NC/PLC Backup functions
without entering a code number.
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HEIDENHAIN | TNC620 | Klartext Programming User's Manual | 01/2022
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