
16. COMPENSATION FUNCTION
16.1
Tool Length Offset (G43, G44, G49)
16.1.3
Tool length offset
C
G43 and G44 are used to set the CNC unit in the tool length offset mode. The axis
address
CT
specified in the G43 or
G44
block specifies the axis to which the tool
length offset is applied.
G43
GM
‘mH-
1
;
(CY
is any axis)
The above command shifts the end point of the a-axis move command in the positive
or negative direction by
;he
value set in the offset memory. This function can
compensate tool length without altering the program, by setting in the offset memory
the deference in the values between the assumed tool length for programming and
the tool length used for actual machining.
(Note 1) Parameter TLC (No.
5001#0)
specifies the tool length compensation C. Always specify the tool
length compensation with
H
code by a parameter OFH (No.
5OOW2)
set to 0.
(Note
2)
Setting parameter TAL (No.
5OOW3)
to 1 allows an offset of simultaneous
2 axes.