Delta Tau GEO BRICK LV Manual Do Utilizador
Turbo PMAC User Manual
Writing and Executing Motion Programs
283
+Z
+X
+Y
+Z
+X
+Y
+Z
+X
+Y
+Z
+X
+Y
+Z
+X
+Y
+Z
+X
+Y
NORMAL K-1
NORMAL I-1
NORMAL J-1
NORMAL K1
NORMAL J1
NORMAL I1
NORMAL VECTORS FOR CIRCULAR MOVES:
THE PLANES AND CLOCK WISE ARCS THEY DEFINE
CW
CW
CW
CW
CW
CW
CIRCULAR INTERPOLATION
Center Vector
If the vector method of locating the arc center is used, the vector is specified by its I, J, and K-
components (I specifies the component parallel to the X axis, J to the Y axis, and K to the Z-axis). This
vector can be specified as a distance from the starting point (i.e. incrementally), or from the XYZ origin
(i.e. absolutely). The choice is made by specifying ‘R’ in an ABS or INC statement (e.g. ABS(R) or
INC(R)). This affects I, J, and K-specifiers together. (ABS and INC without arguments affect all axes,
but leave the vectors unchanged). The default is for incremental vector specification.
components (I specifies the component parallel to the X axis, J to the Y axis, and K to the Z-axis). This
vector can be specified as a distance from the starting point (i.e. incrementally), or from the XYZ origin
(i.e. absolutely). The choice is made by specifying ‘R’ in an ABS or INC statement (e.g. ABS(R) or
INC(R)). This affects I, J, and K-specifiers together. (ABS and INC without arguments affect all axes,
but leave the vectors unchanged). The default is for incremental vector specification.
Note:
The standard machine-tool usage is for incremental vector specification even when
move endpoint specification is absolute.
move endpoint specification is absolute.
A typical circular move command with a vector specification is:
X1000 Y2000 I500 J-500
Example:
Starting from the point X0 Y0, make a quarter circle clockwise in the XY plane to X20 Y20, then a linear
move to X40 Y20, then a three-quarters circle clockwise to X20 Y0. With the default modes of absolute
move and incremental vector specification, the program would be:
Starting from the point X0 Y0, make a quarter circle clockwise in the XY plane to X20 Y20, then a linear
move to X40 Y20, then a three-quarters circle clockwise to X20 Y0. With the default modes of absolute
move and incremental vector specification, the program would be:
NORMAL K-1
; XY plane
F10
CIRCLE1 ; Clockwise circle
CIRCLE1 ; Clockwise circle