1. G Function Description
1.2.21 G43/G44/G49: TOOL LENGTH
COMPENSATION
Command form:
G43
G44
Z_
H _;
G49；
G43: compensation along positive direction；
G44: compensation along negative direction；
G49: compensation cancel；
Z: Z axis end coordinates；
H: tool number；
Description:
when use machine to process each workpieces, there are many tools
that we use, and the length of each tool is different, during programming,
after change the tool the difference between tool length will make Z axis
direction have errors, tool length compensation(G43/G44) is used to Z axis
position compensation and to correct the difference between tool length.
Compensation value setting:
(consult “milling machine controller manual”)
First way:
use manual that let the tool go down from machine zero point of Z axis
until it touch the surface of workpiece, enter the distance to tool setup in
operation interface and do this for each tools. Set the number of tool in H
value of program command form.
Second way:
choose a tool to be basis, in system operation interface do tool length
adjust in work coordinates setting to G54 system, after that we can use it to
be the difference between tools of basis tool, we can convert length of
compensation.
Example:
53
    "