Siemens Sinumerik 840D sl Programming Manual page 731

Always in last line of table:
9) Predecessor: Line n is the contour table start (backwards)
10) Successor: Line n contains the contour start (backwards)
Further Information
Permitted traversing commands, coordinate system
The following G commands can be used for the contour programming:
• G group 1: G0, G1, G2, G3
In addition, the following are possible:
• Rounding and chamfer
• Circle programming using CIP and CT
The spline, polynomial and thread functions result in errors.
Changes to the coordinate system by activating a frame are not permissible between
CONTPRON and EXECUTE. The same applies for a change between G70 and G71 or G700 and
G710.
Replacing the geometry axes with GEOAX while preparing the contour table produces an
alarm.
Relief cut elements
The contour description for the individual relief cut elements can be performed either in a
subprogram or in individual blocks.
Stock removal independent of the programmed contour direction
The contour preparation with CONTPRON was expanded so that after it has been called, the
contour table is available independent of the programmed direction.
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
User stock removal programs
15.2 Generate contour table (CONTPRON)
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