HEIDENHAIN TNC 620 (73498x-01) - Manual (Page 240)

240 Programming: Q parameters
8.3 Descr
ibing cont
ours thr
ough mathematical oper
ations
8.3 Describing contours through
mathematical operations
Application
The Q parameters listed below enable you to program basic
mathematical functions in a part program:
U Select a Q-parameter function: Press the Q key (in the numerical
keypad at right). The Q parameter functions are displayed in a soft
key row
U To select the mathematical functions, press the BASIC
ARITHMETIC soft key. The TNC then displays the following soft
keys:
Overview
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.
Function Soft key
FN 0 : ASSIGN
Example: FN 0: Q5 = +60
Assigns a numerical value.
FN 1 : ADDITION
Example: FN 1: Q1 = -Q2 + -5
Calculates and assigns the sum of two values.
FN 2 : SUBTRACTION
Example: FN 2: Q1 = +10 - +5
Calculates and assigns the difference of two values.
FN 3 : MULTIPLICATION
Example: FN 3: Q2 = +3 * +3
Calculates and assigns the product of two values.
FN 4 : DIVISION
Example: FN 4: Q4 = +8 DIV +Q2
Calculates and assigns the quotient of two values.
Not permitted: Division by 0
FN 5 : SQUARE ROOT
Example: FN 5: Q20 = SQRT 4
Calculates and assigns the square root of a number.
Not permitted: Calculating the square root of a
negative value!