
B--63003EN--1/02
3. MANUAL OPERATION
331
Where (inside or outside of the circle) the prohibited area is set is
determined according to the setting of R974 (which is to be
machined, the inside or outside of the circle). If the inside of the
circle is to be machined, the prohibited area is outside the circle.
If the outside of the circle is to be machined, the prohibited area
is inside the circle.
X
Approach direction
<Outside to be machined>
<Inside to be machined>
X
YY
Prohibited area
Prohib-
ited area
Approach
direction
7) Notify of changes in the setting (R979).
Reset R979 to 0.
This is the end of circle definition.
8) During circular feed, a distance to a given circle is calculated,
using the following equation, and output to R980 to R983 (4
bytes). The unit of the data is the least input increment.
-- When the inside is to be machined:
R − (X − X
0
)
2 +
(Y − Y
0
)
2
f(X, Y) =
-- When the outside is to be machined:
(X − X
0
)
2 +
(Y − Y
0
)
2
− R
f(X, Y) =
(3) Setting for linear and circular feed
Specify the following data:
Data
1) R961 : 0 (Neither linear nor circular feed is carried out.)
2) R962 : (Need not be specified.)
4) R970 to R973 : (Need not be specified.)
5) R974 : (Need not be specified.)
6) R975 : (Need not be specified.)
7) R979 : Notice of changes in the setting
3) R966 to R 969 : (Need not be specified.)
1) Linear or circular feed selection
Reset R961 to 0.
If R961 is 0, both the guidance and approach handles become
ineffective. The tool will not move, even if these handles are
rotated.
2) to 6) It is unnecessary to set R962 to R975.