Principle And Overview - HEIDENHAIN ITNC 530 - 6-2010 DIN-ISO PROGRAMMING User Manual

9.1 Principle and Overview

You can program entire families of parts in a single part program. You
do this by entering variables called Q parameters instead of fixed
numerical values.
Q parameters can represent information such as:
Coordinate values
Feed rates
Spindle speeds
Cycle data
Q parameters also enable you to program contours that are defined
with mathematical functions. You can also use Q parameters to make
the execution of machining steps depend on logical conditions.
Q parameters are designated by letters and a number between 0 and
1999. Parameters that take effect in different manners are available.
Please refer to the following table:
Meaning
Freely applicable parameters, as long as no
overlapping with SL cycles can occur, globally
effective for all programs stored in the TNC
memory
Parameters for special TNC functions
Parameters that are primarily used for cycles,
globally effective for all programs stored in the
TNC memory
Parameters that are primarily used for OEM
cycles, and are globally effective for all programs
stored in the TNC memory. This may require
coordination with the machine manufacturer or
supplier
Parameters that are primarily used for call-
active OEM cycles, globally effective for all
programs that are stored in the TNC memory
Parameters that are primarily used for Def-
active OEM cycles, globally effective for all
programs that are stored in the TNC memory
Freely applicable parameters, globally effective
for all programs stored in the TNC memory
Freely usable QL parameters, only effective
locally (within a program)
Freely usable QR parameters that are nonvolatile,
i.e. they remain in effect even after a power
interruption
254
Range
Q0 to Q99
Q100 to Q199
Q200 to Q1199
Q1200 to Q1399
Q1400 to Q1499
Q1500 to Q1599
Q1600 to Q1999
QL0 to QL499
QR0 to QR499
Programming: Q Parameters