HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 387)

HEIDENHAIN TNC 620 387
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Programming notes
You can mix Q parameters and fixed numerical values within a
program.
Calling Q-parameter functions
When you are writing a part program, press the “Q” key (in the
numeric keypad for numerical input and axis selection, below the
+/– key). The TNC then displays the following soft keys:
Some Q parameters are always assigned the same data by
the TNC. For example, Q108 is always assigned the
current tool radius (see “Preassigned Q Parameters,”
page 442).
Function group Soft key Page
Basic arithmetic (assign, add, subtract,
multiply, divide, square root) Page 389
Trigonometric functions Page 391
Function for calculating circles Page 393
If/then conditions, jumps Page 394
Other functions Page 397
Entering formulas directly Page 430
Formula for string parameters Page 434