Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Uživatelský manuál stáhnout pdf (Strana 260)

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Appendix B

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B-129

Removes a TAG or TAGs from the TAG table defined by the

calling process.

C Syntax

#include <copro.h>

unsigned TAG_UNDEF (tag)

unsigned tag;

char *tag;

Parameters

tag

Use to access the TAG table. This can be either the symbolic TAG or

the handle returned from a TAG_LINK or TAG_DEFINE call. A value

of CC_ALLTAGS (defined in COPRO.H) will remove all TAGs defined

by this process.

Returns

Value Symbolic Name Meaning

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Description

Use the TAG_UNDEF function to remove a TAG or TAGs from the TAG

table. This function can only remove TAGs defined by the calling process.

C Example

unsigned status;

status = TAG_UNDEF (“Fred”);

TAG_UNDEF

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Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Uživatelský manuál Strana 260