NPM PPCI7443, Руководство пользователя

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Operation Theorem
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49
To specify a circular interpolation path, the following parameters must be
clearly defined.
Center point: The coordinate of the center of arc (In absolute mode) or
The off_set distance to the center of arc(In relative mode)
End point: The coordinate of end point of arc (In absolute mode) or
The off_set distance to center of arc (In relative mode)
Direction: The moving direction, either CW or CCW.
It is not necessary to set radius or angle of arc, since the information above
gives enough constrains. The arc motion stopped when either of the 2 axes
reached end point.
There are two groups of functions that provide 2 axes circular interpolation.
The first group divides the 4 axes into XY (axis 0 & axis 1) and ZU(axis 2 &
axis 3). By calling these functions, the target axes are already assigned.
_7443_start_r_arc_xy(), _7443_start_r_ arc _zu(),
_7443_start_a_ arc _xy(), _7443_start_a_ arc _zu(),
: Refer to section 6.8
The second group allows user to freely assign any 2 target axes.
_7443_start_r_arc2(),_7443_start_a_arc2(),
: Refer to section 6.8
X
Y
(0,0)
Center
(1000,0)
(1800,600)