Fanuc Symbol CAPi T Operators Manual

VARIOUS FUNCTIONS AND
PRECAUTIONS OF Symbolic FAPT
B–63304EN/02
1. VARIOUS FUNCTIONS OF
Symbolic FAPT
312
The incremental designation becomes effective for part figure data input
such as the end point of a figure element and the center of a circular arc.
The start point of the figure element must be defined in any case.
(1)Straight line
When the end point of a straight line having a definite start point is
input by the incremental value, you have only to input an increment
without any need of taking its sign into consideration, since the system
judges the arrow direction.
End point DX = 10I
Z = 30I
or
End point DX = 30
Z = 30I
(Example)
Assume that a lower rightward arrow was inserted at point A in the above
figure.
End point B is located in the minus () direction with reference to the start
point in both X and Z directions. Also, the radius value is input to X.
NOTE
It is rather troublesome to input an X value by the
incremental value in a case as shown in the above figure.
In such a case, the Z value only can be input by the
incremental value.
(2)Circular arc
The incremental value can be specified for inputting the end point and
center of the circular arc.
Unlike in a straight line, the end point direction as viewed from the
start point changes according to the length of circular arc, and its
direction cannot be determined automatically.
Accordingly, a signed numerical value must be input.
The sign is taken into consideration in the defined coordinate system.
Center CDX = 13I
CZ = 17I
End point DX = 10I or 100
Z= –10I
(Example) (Example)
1.2
INCREMENTAL
DESIGNATION

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