Siemens SINUMERIK 840D sl Function Manual page 113

Parameters Type
appminus
appplus
The following must be true: appplus > appminus
1)
Contour description for protection zone
The contour of a protection zone is described with traversing motions. These are not
executed and have no connection to previous or subsequent geometry descriptions. They
only define the protection zone.
The contour of a protection zones is specified with up to eleven traversing movements in the
selected working plane. The first traversing movement is the movement to the contour. The
last point in the contour description must always coincide with the first point of the contour
description. In the case of rotationsymmetrical contours (e.g. spindle chuck), the whole
contour must be described (not merely the contour to the turning center).
The valid protection zone is the zone left of the contour:
• Internal protection zone
• External protection zones (permitted only for workpiece-related protection zones)
Figure 2-11
Toolrelated protection zones must be convex. If a concave protection zone is required, the
protection zone must be divided up into several convex protection zones.
Basic logic functions: Axis monitoring, protection zones (A3)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Description
2 Limit in minus direction
3 Limit in positive and negative direction
REAL Value of the limit in the negative direction in the 3rd dimension
REAL Value of the limit in the positive direction in the 3rd dimension
The contour of an internal protection zone must described in the counterclockwise
direction.
The contour of an external protection zone must be described in the clockwise direction.
Examples: External and internal protection zone
Detailed description
2.2 Protection zones
1)
1)
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