Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual do Utilizador descarregar pdf (Página 262)

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Appendix B

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B-131

This function unlocks the requested TAG memory area.

C Syntax

#include <copro.h>

unsigned TAG_UNLOCK (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.

Returns

Value Symbolic Name Meaning



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Description

Use the TAG_UNLOCK function to unlock the TAG locked by

TAG_LOCK.

Important: This function must be called after access to the TAG is

completed; otherwise, the system may hang.

TAG_UNLOCK

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Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual do Utilizador Página 262