Siemens SINUMERIK 880 Programming Manual page 233

11 Programming of Cycles
11.10 NC-specific functions
Results of intersection calculations with @711
X
5)
150
100
N20
50
50
1) Intersection not found
2) Intersection found
3) Circular arc extends beyond the quadrant boundary(!):
Intersection not found
4) Search path was too short:
Intersection found nonetheless
5) Wrong direction of search:
Intersection found nonetheless
Together with the direction of search, a path is defined along which the intersection is ex-
pected. An intersection is always found when this path or its extension encounters the contour
stored in R to (R +6). An interface is found even if the path programmed after @ 711 points
n n
in the wrong direction or is too short.
The function @ 711 now enters the value 0 into register R
or the value 1 if the search was successful. If an intersection has been found, the parameters
(R +1) and (R +2) contain the intersection coordinates, otherwise the value 0. If a traverse
m m
movement is to be programmed with the values from (R
of all to enquire in a loop whether an intersection has been found or not.
11–46
4) 3)
N10
N15
150
100
© Siemens AG 1991 All Rights Reserved
2) 1)
N5
Z
200 250
if no intersection has been found,
m
+1) and (R +2), it is necessary first
m m
6ZB5 410-0HD02
SINUMERIK 880, (PG)
05.91