1 principle and overview – HEIDENHAIN iTNC 530 (340 49x-04) User Manual
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11 Programming: Q Parameters
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.1 Pr
inciple and Ov
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11.1 Principle and Overview
You can program an entire family 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. 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 the letter Q and a number between 0
and 1999. They are grouped according to various ranges:
Q4
Q2
Q3
Q1
Q5
Q6
Meaning
Range
Freely applicable parameters, globally effective
for all programs stored in the TNC memory
Q1600 to
Q1999
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, 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