Tool Length Offset/Cancel; G43, G44/G49 - Mitsubishi Electric MELDAS C6 Programming Manual

12. Tool Offset Functions

12.2 Tool length offset/cancel; G43, G44/G49

Function and purpose
The end position of the movement command can be offset by the preset amount when this
command is used. A continuity can be applied to the program by setting the actual deviation from
the tool length value decided during programming as the offset amount using this function.
Command format
When tool length offset is +
G43 Zz Hh ; Tool length offset + start
:
G49 Zz ; Tool length offset cancel
Detailed description
(1) Tool length offset movement amount
The movement amount is calculated with the following expressions when the G43 or G44
tool length offset command or G49 tool length offset cancel command is issued.
G43 Zz Hn
G44 Zz Hh
G49 Zz
Regardless of the absolute value command or incremental value command, the actual end
point will be the point offset by the offset amount designated for the programmed movement
command end point coordinate value.
The G49 (tool length offset cancel) mode is entered when the power is turned ON or when
M02 has been executed.
(Example 1) For absolute value command
(Example 2) For incremental value
Z axis movement amount
; z + (lh ) Offset in + direction by tool offset amount
1 1
z − Offset in − direction by tool offset amount
; (lh )
1 1
z −(+)
; (lh ) Offset amount cancel.
1
lh
: Offset amount for offset No. h
1
H01 = −100000
N1 G28 Z0 T01 M06 ;
N2 G90 G92 Z0 ;
N3 G43 Z5000 H01 ;
N4 G01 Z-50000 F500 ;
command
H01 = −100000
N1 G28 Z0 T01 M06 ;
N2 G91 G92 Z0 ;
N3 G43 Z5000 H01 ;
N4 G01 Z-55000 F500 ;
102
12.2 Tool length offset/cancel
When tool length offset is −
G44 Zz Hh ; Tool length offset − start
:
G49 Zz ;
1
Tool length offset
H01=-100.
R
+5.00
0
W
-50.000