48 Using Fixed Cycles
2.1 Working with Fixed Cycles
2.1 Working with Fixed Cycles
Machine-specific cycles
In addition to the HEIDENHAIN cycles, many machine tool builders
offer their own cycles in the TNC. These cycles are available in a
separate cycle-number range:
Cycles 300 to 399
Machine-specific cycles that are to be defined through the CYCLE
DEF key
Cycles 500 to 599
Machine-specific touch probe cycles that are to be defined through
the TOUCH PROBE key
Sometimes, machine-specific cycles also use transfer parameters,
which HEIDENHAIN already used in the standard cycles. The TNC
executes DEF-active cycles as soon as they are defined (see also
”Calling cycles” on page 50). It executes CALL-active cycles only after
they have been called (see also ”Calling cycles” on page 50). When
DEF-active cycles and CALL-active cycles are used simultaneously, it
is important to prevent overwriting of transfer parameters already in
use. Use the following procedure:
U As a rule, always program DEF-active cycles before CALL-active
cycles
U If you do want to program a DEF-active cycle between the definition
and call of a CALL-active cycle, do it only if there is no common use
of specific transfer parameters
Refer to your machine manual for a description of the
specific function.
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