Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual de usuario descargar pdf (Pagina 247)

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Appendix B

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B-116

Adds an entry to the control-coprocessor TAG table.

C Syntax

#include <copro.h>

unsigned TAG_DEFINE (name_id,tag_addr,

tag_name,tag_size,access)

unsigned *name_id;

unsigned tag_addr;

unsigned char *tag_name;

unsigned tag_size;

unsigned char access;

Parameters

name_id

Name_id is used to return a handle assigned by the TAG library to the

TAG name.

tag_addr

Pointer to the start of the user’s tagged area.

tag_name

Specifies the name of the user’s TAG. This is a null-terminated

ASCII string of up to 9 characters. The TAG name can contain the

following characters: A-Z, a-z, 0-9, and _. The first character

must be alphabetic.

tag_size

Specifies the number of consecutive bytes starting at the tag_addr to be

included in the tagged area. This number must be ≤ 240.

access

Specifies either READ or READ/WRITE access to the tagged area by

other processes. Possible values are:

Value

Symbolic Name



Access



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TAG_DEFINE

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Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual de usuario Pagina 247