Describing Contours With Mathematical Functions; Application; Overview - HEIDENHAIN TNC 620 User Manual

9.3 Describing contours with
mathematical functions

Application

The Q parameters listed below enable you to program basic
mathematical functions in a machining program:
Select a Q parameter function: Press the Q key (in the numerical
keypad on the right). The Q parameter functions are displayed in
a soft key row
Select the mathematical functions: Press the BASIC
ARITHMETIC soft key. The TNC then displays the following soft
keys:

Overview

Soft key Function
FN 0: ASSIGN
e.g. FN 0: Q5 = +60
Directly assign value
FN 1: ADDITION
e.g. FN 1: Q1 = -Q2 + -5
Form and assign sum from 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
Form and assign the quotient of two values
Not permitted:
FN 5: SQUARE ROOT e.g. FN 5: Q20 = SQRT
4 Form and assign the square root of a value
Not permitted:
value
To the right of the "=" character you can enter the following:
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.
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015

Describing contours with mathematical functions

Division by 0
Square root from negative
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9.3
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