Siemens SINUMERIK 840D sl Programming Manual page 907

<following axis>:
<leasing axis>:
<following value>:
<leading value>:
<approximate
value>:
<a>:
<b>:
Examples
Example 1:
Define following axis and leading axis values at the start and end of the curve table, along with
the minimum and maximum values of the following axis in the entire definition range of the
curve table.
Program code
N10 DEF REAL STARTPOS
N20 DEF REAL ENDPOS
N30 DEF REAL STARTPARA
N40 DEF REAL ENDPARA
N50 DEF REAL MINVAL
N60 DEF REAL MAXVAL
N70 DEF REAL GRADIENT
...
N100 CTABDEF(Y,X,1,0)
N110 X0 Y10
N120 X30 Y40
N130 X60 Y5
N140 X70 Y30
N150 X80 Y20
N160 CTABEND
...
N200 STARTPOS=CTABTSV(1,GRADIENT)
N210 ENDPOS=CTABTEV(1,GRADIENT)
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Axis whose motion is to be calculated using the curve table (optional)
Axis providing the master values for the calculation of the following axis
motion (optional)
Following axis value for reading the associated leading axis value
for CTABINV
Leading axis value:
● For reading the associated following axis value with CTAB
or
● For the selection of the curve segment with CTABSSV/CTABSEV
The assignment of a leading axis value to a following axis value
with CTABINV must not always be unique. CTABINV requires, therefore, an
approximate value for the expected leading axis value as a parameter.
Lower limit of the master value interval with CTABTMIN/CTABTMAX
Upper limit of the master value interval with CTABTMIN/CTABTMAX
Note:
The master value interval <a> to <b> always has to be within the curve
table's definition range.
Comment
; Start of table definition
; Start position 1st table segment
; End position 1st table segment =
start position 2nd table segment
; End position 2nd table segment = ...
; End of table definition.
; Following axis value at start of curve table
= 10
; Following axis value at end of curve table =
20
Work preparation
3.16 Axis couplings
907