Prosoft-technology MVI56E-LDM Manuale Utente Scaricare il pdf (Pagina 127)

ControlLogix Platform ♦ "C" Programmable CIP API Functions

Linux Application Development Module Developer's Manual

ProSoft Technology, Inc. Page 121 of 264

March 12, 2014

OCXcip_TestTagDbVer

Syntax

int OCXcip_TestTagDbVer(OCXHANDLE apihandle,

OCXTAGDBHANDLE tdbHandle,

Parameters

apiHandle

handle returned by previous call to OCXcip_Open

tdbHandle

handle created by previous call to

OCXcip_CreateTagDbHandle

Description

This function reads the program version from target device and compares it to

the device program version read when the tag database was built.

Return Value

OCX_SUCCESS

ID object was retrieved successfully

OCX_ERR_NOACCESS

apihandle or tdbHandle is invalid

OCX_ERR_VERMISMATCH

Database version mismatch, call OCXcip_BuildTagDb to

refresh

Example

OCXHANDLE hApi;

OCXTAGDBHANDLE hTagDb;

int rc;

rc = OCXcip_TestTagDbVer(hApi, hTagDB);

if ( rc !=OCX_SUCCESS )

{

if ( rc == OCX_ERR_OBJEMPTY || rc == OCX_ERR_MISMATCH )

rc = OCXcip_BuildTagDb(hApi, hTagDb );

}

if ( rc != OCX_SUCCESS )

printf ("Tag database not valid\n");

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Prosoft-technology MVI56E-LDM Manuale Utente Pagina 127