Siemens SINUMERIK 828D Programming Manual page 219

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Further information

Definition of protection zones

Definition of the protection zones includes the following:

● Contour description for protection zone

● Termination of the definition with

You can specify a relative offset for the reference point of the protection zone when the

protection zone is activated in the NC part program.

Reference point for contour description

The workpiece-oriented protection zones are defined in the basic coordinate system.

The tool-oriented protection zones are defined with reference to the tool carrier reference

Permissible contour elements

The following are permissible to define the contour of the protection zone:

External protection zones

External protection zones (only possible for workpiece-related protection zones) must be

defined in the clockwise direction.

Protection zones symmetrical around the center of rotation

For protection zones symmetrical around the axis or rotation (e.g. spindle chuck), you must

describe the complete contour and not only up to the center of rotation!

Job planning

Programming Manual, 07/2010, 6FC5398-2BP40-0BA0

for channel-specific protection zones

for machine-specific protection zones

for straight contour elements

for clockwise circle segments (only for workpiece-oriented protection zones)

for circular segments in the counterclockwise direction

If a full circle describes the protection zone, it must be divided into two half circles. The

The last point in the contour description must coincide with the first.

3.1 Definition of the protection zones (CPROTDEF, NPROTDEF)

is not permitted. A short

Protection zones

block must be inserted, if

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