HEIDENHAIN iTNC 530 (340 49x-02) ISO programming - Manual (Page 485)

HEIDENHAIN iTNC 530 485
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Programming notes
You can mix Q parameters and fixed numerical values within a
program.
Q parameters can be assigned numerical values between
–99 999.9999 and +99 999.9999. Internally, the TNC can calculate up
to a width of 57 bits before and 7 bits after the decimal point (32-bit
data width corresponds to a decimal value of 4 294 967 296).
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 503).
If you are using the parameters Q60 to Q99 in encoded
OEM cycles, define via MP7251 whether the parameters
are only to be used locally in the OEM cycles, or may be
used globally.
Function group Soft key Page
Basic arithmetic (assign, add, subtract,
multiply, divide, square root) Page 487
Trigonometric functions Page 490
If/then conditions, jumps Page 492
Other functions Page 495
Entering formulas directly Page 499
Function for machining complex
contours Page 396