/*------------------------------------------------------------------------------
** Forward declarations
**------------------------------------------------------------------------------
*/
...
static ABCC_CmdSeqCmdStatusType ReadSerialNumCmd( ABP_MsgType* psMsg );
static ABCC_CmdSeqRespStatusType ReadSerialNumResp( ABP_MsgType* psMsg);

static UINT32 abcc_iSerialNumber;


/*------------------------------------------------------------------------------
** User init sequence. See abcc_cmd_seq_if.h
**------------------------------------------------------------------------------
*/
static const ABCC_CmdSeqType appl_asUserInitCmdSeq[] =
{
   ...
   ABCC_CMD_SEQ(ReadSerialNumCmd, ReadSerialNumResp),
   ABCC_CMD_SEQ_END()
};


/*******************************************************************************
** Private Services
********************************************************************************
*/

...
static ABCC_CmdSeqRespStatusType ReadSerialNumCmd(ABP_MsgType* psMsg )
{   
    ABCC_GetAttribute( psMsg, ABP_OBJ_NUM_ANB, 1,
        ABP_ANB_IA_SERIAL_NUM, ABCC_GetNewSourceId());
    return( ABCC_SEND_COMMAND );

}


static ABCC_CmdSeqCmdStatusType ReadSerialNumResp(ABP_MsgType* psMsg) 
{
    ABCC_ASSERT_ERR(ABCC_VerifyMessage(psMsg) == ABCC_EC_NO_ERROR,
        ABCC_SEV_WARNING, ABCC_EC_RESP_MSG_E_BIT_SET,
        (UINT32)ABCC_GetErrorCode(psMsg));
    ABCC_GetMsgData32(psMsg, &abcc_iSerialNumber, 0);
    ABCC_PORT_DebugPrint(("RSP MSG_GET_MODULE_SERIAL_NUM: %X\n", abcc_iSerialNumber));
    return(ABCC_EXEC_NEXT_COMMAND);
}

...

/*******************************************************************************
** Public Services
********************************************************************************
*/

APPL_AbccHandlerStatusType APPL_HandleAbcc( void )
{
    abcc_iSerialNumber == 0xFFFFFFFF;
   ... 
}