G254 - Dynamic Work Offset (DWO) (Group 23)
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NOTE: For clarity, the illustrations in this section do not depict workholding.
The block in the figure below was programmed in the CAM system with the top center hole
located at the center of the pallet and defined as X0, Y0, Z0.
F6.1: Original Programmed Position
In the figure below, the actual workpiece is not located in this programmed position. The
center of the workpiece is actually located at X1, Y-1, Z0, and is defined as G54.
F6.2: Center at G54, DWO Off
DWO is invoked in the figure below. The control knows the centers of rotation for the rotary
table (MRZP), and the location of the workpiece (active work offset G54). The control uses
this data to apply the appropriate offset adjustments to make sure that the proper toolpath
is applied to the workpiece, as intended by the CAM-generated program. This eliminates
the need to repost a program from the CAM system when the programmed and actual
workpiece locations are different.
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