Siemens sinumerik 840d Programming Manual page 155

04.00
5
840D 840D
NCU 571 NCU 572
NCU 573
Supplementary conditions
The following supplementary conditions apply only to
akima and cubic splines (A and C splines).
The transitional response (start and end) of these
spline curves can be set via two groups of
instructions consisting of three commands each.
Explanation of the commands
Start of spline curve:
BAUTO
BNAT
BTAN
End of spline curve:
EAUTO
ENAT
ETAN
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SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
FM-NC 810D 840Di
No command input; start is determined by the position of the first point
Zero curvature
Tangential transition to preceding block (initial setting)
No command input; end is determined by the position of the last point
Zero curvature
Tangential transition to next block (initial setting)
Special Motion Commands
5.2 Spline interpolation
BAUTO
EAUTO
No command input
BNAT
ENAT
Zero curvature
Transition
tangential
BTAN ETAN
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