Subprograms And Program Section Repeats; Programming With Q Parameters - HEIDENHAIN TNC 620 User Manual

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Programming contours | Tool movements

Subprograms and program section repeats

If a machining sequence occurs several times in a program, you
can save time and reduce the chance of programming errors by
entering the sequence once and then defining it as a subprogram
or program-section repeat. If you wish to execute a specific
NC program section only under certain conditions, you also define
this machining sequence as a subprogram. In addition, you can have
an NC program call a separate NC program for execution.
Further information: "Subprograms and program section repeats",
Page 243

Programming with Q parameters

Instead of programming numerical values in an NC program, you
enter markers called Q parameters. You can use the Q parameters
for programming mathematical functions that control program
execution or describe a contour.
In addition, programming with Q parameters enables you to measure
with the 3-D touch probe during the program run.
Further information: "Programming Q parameters", Page 267
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HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022