294 Programming: Q Parameters
9.1 Principle and Overview
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:
îš„ Coordinate values
îš„ Feed rates
îš„ Spindle speeds
îš„ 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. In
conjunction with FK programming you can also combine contours that
do not have NC-compatible dimensions with Q parameters.
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 Range
Freely applicable parameters, as long as no
overlapping with SL cycles can occur, globally
effective for all programs stored in the TNC
memory
Q0 to Q99
Parameters for special TNC functions Q100 to Q199
Parameters that are primarily used for cycles,
globally effective for all programs stored in the
TNC memory
Q200 to Q1199
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
Q1200 to Q1399
Parameters that are primarily used for call-
active OEM cycles, globally effective for all
programs that are stored in the TNC memory
Q1400 to Q1499
Parameters that are primarily used for Def-
active OEM cycles, globally effective for all
programs that are stored in the TNC memory
Q1500 to Q1599
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