Siemens SINUMERIK 840D sl Programming Manual page 1292

Tables
4.6 Predefined functions
Geometry functions
Identifier Return value
CALCDAT BOOL:
Error status
INTERSEC BOOL:
Error status
Curve table functions
Identifier Return
value
CTAB REAL:
Follow‐
ing axis
position
CTABINV REAL:
Leading
axis posi‐
tion
CTABID INT:
Curve ta‐
ble num‐
ber
1292
Parameter
1. 2.
VAR REAL [n, INT:
2]: Number of points
Table (abscissa,
ordinate) of
points 1 to n
VAR REAL [11]: VAR REAL [11]:
First contour ele‐ Second contour
ment element
1. 2. 3.
REAL: INT: VAR RE‐
Leading Table AL[ ]:
axis posi‐ number Pitch re‐
tion sult
REAL: REAL: INT:
Follow‐ Leading Table
ing axis position number
position
INT: STRING:
Entry Storage
number location:
in memo‐ "SRAM",
ry "DRAM"
3.
VAR REAL [3]:
Result: Abscis‐
sa, ordinate and
radius of calcula‐
ted circle center
point
VAR REAL [2]:
Result vector for
the intersection
coordinates: Ab‐
scissa and ordi‐
nate
Parameter
4. 5.
AXIS: AXIS:
Follow‐ Leading
ing axis axis for
for scal‐ scaling
ing
VAR RE‐ AXIS:
AL[ ]: Follow‐
Pitch re‐ ing axis
sult for scal‐
ing
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Explanation
Calculates the center point coor‐
dinates and the radius of the cir‐
cle from 3 or 4 points
The points must be different.
Calculates the intersection coor‐
dinates between two contour el‐
ements.
The error status indicates wheth‐
er an intersection was found.
Explanation
6.
Determines the follow‐
ing axis position to the
specified leading axis
position from the curve
table.
If parameters 4/5 are
not programmed, cal‐
culation is with stand‐
ard scaling.
AXIS: Determines the lead‐
Leading ing axis position to the
axis for specified following ax‐
scaling is position from the
curve table.
If parameters 5/6 are
not programmed, cal‐
culation is with stand‐
ard scaling.
Determines the curve
table number entered
under the specified
number in the memory.
NC programming