Siemens Sinumerik 840D sl Programming Manual page 513

Significance
CTABDEF( )
CTABEND
<following
axis>
<leading axis>
<n>
<periodicity>
<memory
location>
Note
Overwrite
A curve table is overwritten as soon as its number (<n>) is used in another table definition
(exception: the curve table is in active in an axis coupling or locked with CTABLOCK). No
warning is output when curve tables are overwritten.
Examples
Example 1: Program section as curve table definition
A program section is to be used unchanged for defining a curve table. The STOPRE command
for preprocessing stop can remain and is reactivated immediately as soon as the program
section is no longer being used for table definition and CTABDEF and CTABEND have been
removed.
Program code
...
CTABDEF(Y,X,1,1)
...
IF NOT ($P_CTABDEF)
STOPRE
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Start of curve table definition
End of curve table definition
Axis whose motion is to be calculated using the curve table
Axis providing the master values for the calculation of the following
axis motion
Number (ID) of curve table
The number of a curve table is unique and independent of the
memory location. It is not possible for there to be tables with the
same number in the static and dynamic NC memory.
Table periodicity
Table is non-periodic (table is processed only once, even for
0
rotary axes)
Table is periodic with regard to the leading axis
1
Table is periodic with regard to leading axis and following axis
2
Specification of memory location (optional)
The curve table is created in the static NC memory.
"SRAM"
The curve table is created in the dynamic NC memory.
"DRAM"
Note:
If a value is not programmed for this parameter, the default memory
location set with
MD20905 $MC_CTAB_DEFAULT_MEMORY_TYPE is used.
Comments
; Definition of a curve table.
Axis couplings
9.2 Curve tables (CTAB)
513