Siemens SINUMERIK 840D sl Programming Manual page 381

Example of the definition of a curve table
N100 CTABDEF(Y,X,3,0)
N110 X0 Y0
N120 X20 Y0
N130 X100 Y6
N140 X150 Y6
N150 X180 Y0
N200 CTABEND
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
;Begin of the definition of a non-periodic
;curve table with the number 3 definition
;of the curve table
;1. traverse statement defines starting
;values and 1st intermediate point:
;Master value: 0; Following value: 0
;2. Intermediate point: Master value: 0...20
;Following value: starting value...0
;3. Intermediate point:
;Master value: 20...100; Following value: 0...6
;4. Intermediate point:
;Master value: 100...150
;Following value: 6...6
;5. Intermediate point:
;Master value: 150...180
;Following value: 6...0
;End of the definition; The curve table is
;generated in its internal representation
;as a polynomial up to the 3rd order;
;The calculation of the curve definition
;depends on the modally selected
;interpolation type
;(circular, linear, spline interpolation);
;The parts program state before the
;beginning of the definition is restored.
Path traversing behavior
9.3 Curve tables (CTAB)
9-15