Siemens sinumerik 840d Programming Manual page 474

User Stock Removal Programs
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14.3 Contour decoding: CONTDCON (as of SW 5.2)
840D 840D
NCU 571 NCU 572
NCU 573
Terminate contour preparation
When you call the predefined subroutine EXECUTE
(ERROR), contour preparation is terminated and the
system switches back to normal execution when the
contour has been described. The associated variable
ERROR gives the return value:
0 = no error (contour produced no errors)
1 = error
Impermissible commands, incorrect initial conditions,
CONTDCON call repeated without EXECUTE( ), too
few contour blocks
or table definitions too small produce additional
alarms.
Stock removal in the programmed contour
direction
The contour table produced using CONTDCON is
used for stock removal in the programmed direction
of the contour.
Programming example
Create a contour table with
• name KTAB,
• contour elements (circles, straight lines),
• mode: Turning
• preparation forward
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SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
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