Siemens sinumerik 840d Programming Manual page 318

Path Traversing Behavior
9
9.3 Curve tables, CTABDEF, CTABEND, CTAB, CTABINV
840D 840D
NCU 571 NCU 572
NCU 573
Programming example 2
Definition of a periodic curve table with number 2,
leading value range 0 to 360, following axis motion
from 0 to 45
and back to 0:
N10 DEF REAL DEPPOS;
N20 DEF REAL GRADIENT;
N30 CTABDEF(Y,X,2,1)
N40 G1 X=0 Y=0
N50 POLY
N60 PO[X]=(45.0)
N70 PO[X]=(90.0) PO[Y]=(45.0,135.0,-
90)
N80 PO[X]=(270.0)
N90 PO[X]=(315.0) PO[Y]=(0.0,-
135.0,90)
N100 PO[X]=(360.0)
N110 CTABEND
Test of the curve by coupling Y to X:
N120 G1 F1000 X0
N130 LEADON(Y,X,2)
N140 X360
N150 X0
N160 LEADOF(Y,X)
Read the table function for leading value 75.0:
N170 DEPPOS=CTAB(75.0,2,GRADIENT)
Positioning of the leading and the following axis:
N180 G0 X75 Y=DEPPOS
After activating the coupling no synchronization of
the following axis is required:
N190 LEADON(Y,X,2)
N200 G1 X110 F1000
N210 LEADOF(Y,X)
N220 M30
9-318
810D 840Di
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
Beginning of definition
End of definition
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