HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 193)

TNC 426/TNC 425/TNC 415 B/TNC 407 7 - 4
7 Programming with Q Parameters
Fig. 7.2: Part dimensions as Q parameters
Q2
Q2
Q1
Q1
Z1
Z2
7.1 Part Families — Q Parameters in Place of Numerical Values
The Q parameter function D0: ASSIGN assigns numerical values to
Q parameters.
Example: Q10 = 25
This enables you to use variables in the program instead of fixed
numerical values.
Example: X + Q10 (= X + 25)
You only need to write one program for a whole
family of parts, entering the characteristic dimen-
sions as Q parameters. To program a particular part,
you then assign the appropriate values to the
individual Q parameters.
Example
Cylinder with Q parameters
Radius R = Q1
Height H = Q2
Cylinder Z1: Q1 = +30
Q2 = +10
Cylinder Z2: Q1 = +10
Q2 = +50
To assign numerical values to Q parameters:
Select PARAMETER.
Select BASIC ARITHMETIC.
Select D0: ASSIGN.
PARAMETER NUMBER FOR RESULT ?
Enter the Q parameter number, for example 5.
FIRST VALUE / PARAMETER ?
Enter a value or another Q parameter whose value is to be assigned
to Q5.
Resulting NC block: D00 Q5 P01 +6*
ENT
5
6 END