HEIDENHAIN ITNC 530 - CONVERSATIONAL PROGRAMMING User Manual page 298

9.2 Part Families—Q Parameters in
Place of Numerical Values
Function
The Q parameter function FN 0: ASSIGN assigns numerical values to
Q parameters. This enables you to use variables in the program
instead of fixed numerical values.
Example NC blocks
15 FN O: Q10=25
...
25 L X +Q10
You need write only one program for a whole family of parts, entering
the characteristic dimensions as Q parameters.
To program a particular part, you then assign the appropriate values to
the individual Q parameters.
Example
Cylinder with Q parameters
Cylinder radius
Cylinder height
Cylinder Z1
Cylinder Z2
298
Assignment
Q10 is assigned the
value 25
Means L X +25
R = Q1
H = Q2
Q1 = +30
Q2 = +10
Q1 = +10
Q2 = +50
Programming: Q Parameters