Rockwell Automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User Manual - Manual (Page 207)

API Library of Routines
Appendix B
DTL_SIZE
B-76
Gets the size of memory necessary to store the contents of a data item in
control coprocessor format.
C Syntax
#include <copro.h>
unsigned DTL_SIZE (name_id, size)
unsigned name_id;
unsigned *size;
Parameters
name_id
The handle returned by DTL_C_DEFINE when the data item
was defined.
size
Size (in bytes) required for the data item that is returned. Zero is
returned if the data item is undefined.
Returns
Status Symbolic Name Meaning
0 DTL_SUCCESS Operation successful
19 DTL_E_NOINIT Definition table not initialized
20 DTL_E_BADID Definition ID out of range
32 DTL_E_NODEF No such data item defined
Description
Use DTL_SIZE to determine the amount of control-coprocessor memory
necessary to store a copy of the previously defined block of data.
DTL_SIZE