PROGRAMMING
B–63834EN/02
14. COMPENSATION FUNCTION
185
There are two types of offset. One is tool wear offset and the other is tool
geometry offset.
The tool path is offset by the X, Y, and Z wear offset values for the
programmed path. The offset distance corresponding to the number
specified by the T code is added to or subtracted from the and position of
each programmed block.
This block contains the offset
command with T code
Tool path after offset
Programmed path
Compensation by offset X, Z (offset vector)
Fig. 14.1.5(a) Movement of offset (1)
In Fig. 14.1.5(a), the vector with offset X, Y, and Z is called the offset
vector. Compensation is the same as the offset vector.
Offset is cancelled when T code offset number 0 or 00 is selected. At the
end of the cancelled block, the offset vector becomes 0.
N1 X50.0 Z100.0 T0202 ; Creates the offset vector corresponding
to offset number 02
N2 X200.0 ;
N3 X100.0 Z250.0 T0200 ;Specifying offset number 00 deletes the
offset vector.
N1
N2
Tool path after offset
Programmed path
Fig. 14.1.5(b) Movement of offset (2)
With parameter LVC (No. 5003#6) set to 1, the offset is canceled when:
1) The initial time after power is turned on.
2) The reset key on the MDI unit is pressed.
3) The a reset signal is input from the machine to the CNC.
14.1.5
Offset
Explanations
D Tool wear offset
D Offset vector
D Offset cancel