上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
14 Specialized, Concentrated, Focused
G53: using MCS and disabling zero offset of WCS. It is a non-modal instruction which is only
valid in the current program block.
G17, G18, G19 Coordinate Plane Selection
Command format: G17/G18/G19
Description:
G17: XY plane selection
G18: ZX plane selection
G19: YZ plane selection
This group of instructions is used to select the plane to perform circular interpolation and cutter
radius compensation.
G17 (default), G18 and G19 are modal functions (as shown in Fig. 4-6), which can be mutually
cancelled.
Fig. 4-6 Coordinate Plane Selection
G20/G21 OR G70/G71 Inch/Metric Command
Command format: G20/G21/G70/G71
Description:
G20/70: inch
G21/71: metric
This group of G codes is defined at the beginning of the program block. If one of them is specified,
the units of all subsequent operations will be changed. If not specified, the default unit is metric.
G50/G51 Scaling Function
Command Format: G51 X_Y_Z_P_ (I_J_K_)
Description:
X_Y_Z_: the center of scaling. The omitted coordinate axes will inherit the original scaling and
remain the same.
I_J_K_: the scaling of X, Y and Z axes
P_: the scaling of all listed axes. Either P_ or I_J_K_ can appear in a program block.
Workpiece contour that is compiled in the machining file can be reduced or enlarged to scale.
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