Yaskawa YASNAC PC NC Programming Manual User Manual
Page 57
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YASNAC PCNC Programming Manual
Chapter 3: Movement Control Commands
FIGURE 3.1.3.1: Rotation of Workpiece Coordinate System
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If coordinate rotation is executed when calling a workpiece coordinate system by G54,
rotation is also applied to the intermediate positioning point when G28 or G30 is executed.
However, this is not applied to the reference point.
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The coordinate rotation function is valid only in the G17 plane.
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To cancel the coordinate rotation executed by G54, either specify G52 or reset the shift
distance of the called workpiece coordinate system to “0”, then specify G54 again.
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When the coordinate rotation is executed, the subsequent program paths will be varied
depending on whether or not the intervention of reset is valid. This difference is caused by
the following two specifications.
•
By the reset operation, the present position is taken into the NC as the command
values to be re-set.
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The coordinate: rotation function generates axis move distance by applying rotation
calculation to the NC commands in reference to the center of rotation.
If an address different from the one selected by the setting for parameter pm4012 D7 (J when
the selection is P, or P when the selection is J) is specified with G54, such an address is disre-
garded for the execution of G54.
(Example) pm4012 D7 = 1 (Selection of P) (for option 2 or 3)
G54 J2 X0 Y0; ? Executed as “G54 P1 X0 Y0;