Prosoft-technology MVI56E-LDM Manual de usuario descargar pdf (Pagina 145)

ControlLogix Platform ♦ "C" Programmable CIP API Functions

Linux Application Development Module Developer's Manual

ProSoft Technology, Inc. Page 139 of 264

March 12, 2014

OCXcip_GetDeviceIdObject

Syntax

int OCXcip_GetDeviceIdObject (OCXHANDLE apihandle,

BYTE *pPathStr,

OCXCIPIDOBJ *idoObj,

WORD timeout);

Parameters

apihandle

handle returned by previous call to OCXcip_Open

pPathStr

path to device being read

idobject

pointer to structure receiving the Identify Object Data

timeout

number of milliseconds to wait for the read to complete

Description

OCXcip_GetDeviceIdObject retrieves the identity object from the device at the

address specified in pPathStr.

apihandle must be a valid handle returned from OCXcip_Open.

idobject is a pointer to a structure of type OCXCIPIDOBJ. The members of this

structure will be updated with the module identity data.

timeout is used to specify the amount of time in milliseconds the application

should wait for a response from the device.

The following example defines the OCXCIPIDOBJ structure:

typedef struct tagOCXCIPIDOBJ

{

WORD VendorID; //Vendor ID Number

WORD DeviceType; //General product type

WORD ProductCode: //Vendor-specific product identifier

BYTE MajorRevision; //Major revision level

BYTE MinorRevision; //Minor revision level

DWORD SerialNo; //Module serial number

BYTE Name [32]; //Text module name (null-terminated)

} OCXCIPIDOBJ;

Return Value

OCX_SUCCESS

ID object was retrieved successfully

OCX_ERR_NOACCESS

apihandle does not have access

OCX_ERR_MEMALLOC

returned if not enough memory is available

OCX_ERR_BADPARAM

returned if path was incorrect

Example

OCXCIPHANDLE apihandle;

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