Rockwell Automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User Manual - Manual (Page 171)

API Library of Routines
Appendix B
DTL_C_DEFINE
B-40
Adds a definition to the DTL data-definition table.
C Syntax
#include <copro.h>
unsigned DTL_C_DEFINE (name_id,data_definition)
unsigned *name_id;
char *data_def;
Parameters
name_id
Use to return a handle assigned by the library to the data.
data_definition
Use to specify the data you wish to access. The data_definition
character string is a null-terminated string composed of arguments
separated by commas.
“data_address,[elements],[CC data_type],[access type]”
data_address
Specifies the starting address of the data item.
The first three data files in the PLC-5 programmable controller are
fixed. When addressing them, do not reference a file number.
Use
I:03 for rack 0 group 3, for example, not I1:03 for file
number 1.
[elements]
Optional; specifies the number of consecutive data elements,
starting at data_address, to be included in the data item. The
number of elements multiplied by the number of bytes per element
must be <= 2000 bytes. Default is 1 element.
You can specify elements to the bit level—for example, B3:/4
would point only to bit 4.
[CC data_type]
Optional; specifies data type of calling programs copy of the data.
DTL_C_DEFINE