
9.5-AXIS MACHINING FUNCTION B-63943EN-1/02
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9.2.3.3 Selection of the tool length offset value
The tool length in manual feed for 5-axis machining is determined as
explained below. (Table9.2.3.3 (a))
If bit 2 (LOD) of parameter No. 19746 is set to 0, the value set in
parameter No. 12318 is assumed to be the tool length.
If the LOD parameter is set to 1, and the tool length offset function is
performed, the offset data specified for the tool length offset is
assumed to be the tool length.
If the LOD parameter is set to 1, and the tool length offset function is
not performed, the tool length is determined as follows. If bit 3
(LOZ) of parameter No. 19746 is set to 0, the value set in parameter
No. 12318 is assumed to be the tool length in manual feed for 5-axis
machining; if LOZ is set to 1, the tool length is assumed to be 0.
Table9.2.3.3 (a) Tool length offset value in manual feed for 5-axis
machining
19746#2(LOD)
= 1
= 0
Tool length
offset
enabled
Tool length offset
canceled
= 0
Parameter No. 12318
19746#3
(LOZ)
= 1
Parameter
No. 12318
Offset data
0
The tool length offset function is enabled when the following two
conditions are both satisfied:
• The tool length offset function listed below is enabled (modal
code of group 8 except G49)
- G43/G44 : Tool length compensation
- G43.4/G43.5 : Tool center point control
• The H/D code is other than 0.
If bit 6 (CLR) of parameter No. 3402 is set to 0 not to clear the tool
length offset vector, G codes of group 8, and H codes at the time of a
reset, the tool length offset status is maintained when a reset is made
in the tool length offset mode.