beautypg.com

1 principle and overview, Automatic deletion of q parameters – HEIDENHAIN TNC 406 User Manual

Page 207

background image

186

10 Programming: Q Parameters

1

0.1 Pr

inciple and Ov

erview

10.1 Principle and Overview

You can program an entire family of parts in a single part program. You
do this by entering variables called Q parameters instead of fixed
numerical values.

Q parameters can represent information such as:

„

Coordinate values

„

Electrode data

„

Cycle data

Q parameters are designated by the letter Q and a number between
0 and 255.

Q parameters also enable you to program contours that are defined
through mathematical functions.In addition, you can use Q
parameters to make execution of machining steps depend on certain
logical conditions. You can mix
Q parameters and fixed numerical values within a program.

Automatic deletion of Q parameters

The TNC deletes Q parameters (and the status display) when user
parameter 7300 = 1 and the miscellaneous functions M00, M02 or
M30 or the END block are executed in a program.

Some Q parameters are always assigned the same data by
the TNC. For example, Q108 is always assigned the
current electrode radius (see ”Preassigned Q parameters”
on page 202).

Q4

Q2

Q3

Q1

Q5

Q6

This manual is related to the following products: