HEIDENHAIN TNC 320 (77185x-01) Cycle programming - Manual (Page 44)

Using Fixed Cycles
2.1 Working with fixed cycles
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TNC 320 | User's Manual Cycle Programming | 3/2014
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
Refer to your machine manual for a description of the
specific function.
Sometimes machine-specific cycles use transfer parameters
that HEIDENHAIN already uses in standard cycles. When using
DEF-active cycles (cycles that the TNC automatically runs during
cycle definition, see "Calling a cycle", page 46) simultaneously
with CALL-active cycles (cycles you need to call in order to run
them, see "Calling a cycle", page 46), adhere to the following
procedure in order to avoid problems regarding the overwriting of
transfer parameters that are used more than once:
As a rule, always program DEF-active cycles before CALL-active
cycles
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