HEIDENHAIN TNC 620 Programming Station

Programming Qparameters | Describing contours with mathematical functions
9
9.3 Describing contours with mathematical
functions
Application
The Qparameters listed below enable you to program basic
mathematical functions in an NC program:
Select the Q parameter function: Press the Q key
in the numeric keypad
The Q parameter functions are displayed in the
soft key row.
Press the BASIC ARITHM. soft key
The control displays the soft keys for basic
mathematical functions
Overview
Soft key Function
FN 0: ASSIGN
e.g., FN 0: Q5 = +60
Directly assign value
Reset Q parameter value
FN 1: ADDITION
e.g., FN 1: Q1 = -Q2 + -5
Calculate and assign the sum of two values
FN 2: SUBTRACTION
e.g. FN 2: Q1 = +10 - +5
Form and assign difference between two values
FN 3: MULTIPLICATION
e.g. FN 3: Q2 = +3 * +3
Form and assign the product of two values
FN 4: DIVISION e.g., FN 4: Q4 = +8 DIV +Q2
Calculate and assign the quotient of two values
Not permitted: Division by 0
FN 5: SQUARE ROOT e.g., FN 5: Q20 = SQRT 4
Calculate and assign the square root of a value
Not permitted: Square root of a negative value
You can enter the following to the right of the = sign:
Two numbers
Two Q parameters
A number and a Q parameter
The Q parameters and numerical values in the equations can be
entered with positive or negative signs.
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HEIDENHAIN | TNC620 | Klartext Programming User's Manual | 01/2022