Siemens SINUMERIK 840D sl Programming Manual page 897

<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 either 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
ENDIF
...
CTABEND
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
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.
Comment
; Definition of a curve table.
Work preparation
3.16 Axis couplings
897