SZGH SZGH-CNC1000MDb Series, Руководство пользователя

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-Shenzhen Guanhong Automation Co.,Ltd.- SZGH-CNC1000MDb Series
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3.24 Tool Length Offset (G43/G44/G49)
This function can be used for setting the difference between tool length assumed during
programming and the actual tool length of the tool used into the offset memory. It is possible to
compensate the difference without changing the program.
Specify the direction of offset with G43 or G44. Select a tool length offset value from the
offset memory by entering the corresponding address and number(H code).
Fig3.18.1 Tool Length Offset
The following two methods of tool length offset can be used, depending on the axis along
which tool length offset can be made.

Tool length offset A
: Compensates for the difference in tool length along the Z-axis.

Tool length offset B : Compensates for the difference in tool length along the X-axis, Y-axis , or
Z-axis.
Tool length offset A G43 H_
G44 H_
Offset along the Z-axis
Tool length offset B G17 G43 Z_ H_ ;
G17 G44 Z_ H_ ;
G18 G43 Y_ H_ ;
G18 G44 Y_ H_ ;
G19 G43 X_ H_ ;
G19 G44 X_ H_ ;
G43: Positive Offset
G44: Negative Offset
G17: XY Plane selection, offset on Z-axis
G18: ZX Plane selection, offset on Y-axis
G19: YZ Plane selection, offset on X-axis
Tool length offset cancel G49; or H0 ; Cancel Length Offset
Selection of tool length offset: Select tool length offset A, B, or C, by setting P47 on Speed
parameter.When value of P47 +0,default set, tool length offset A; When +1, tool length offset B;
At tool length offset B, length offset can be shift to another axis when the axes are specified in
two or more blocks.
The tool length offset value assigned to the number(offset number) specified in the H code is
selected from offset memory and added to or subtracted from the moving command in the program.
When G43 is specified, the tool length offset value(store in offset memory) specified with the
H code is added to the coordinates of the end position specified by a command in the program.
When G44 is specified, the same value is subtracted from the Coordinate of the end position. The
resulting coordinates indicate the end position after compensation,regardless of whether the
absolute or incremental mode is selected.