/// <summary>
/// Read Data
/// </summary>
/// <param name="block">Block description to be read</param>
/// <param name="station">Address of the remote station connected to the common field bus. –1 if not applicable.
/// </param>
/// <param name="data">The buffer with the requested data.</param>
/// <param name="retries">Number of retries to get data.</param>
/// <returns>Result of the operation</returns>
AL_ReadData_Result IApplicationLayerMaster.ReadData(IBlockDescription block, int station, out IReadValue data, byte retries)
{
lock (this)
{
m_rPackNum++;
data = null;
myStatistic.IncStTxFrameCounter();
if ((m_errorfrequency > 0) && (m_rPackNum % (ulong)m_errorfrequency == 0))
{
myStatistic.IncStRxFragmentedCounter();
myStatistic.RxDataBlock(false);
return(AL_ReadData_Result.ALRes_DatTransferErrr);
}
data = (IReadValue)pool.GetEmptyISesDBuffer();
// Processes.Timer.Wait(Processes.Timer.TInOneSecond/4);
((NULL_message)data).SetBlockDescription(station, block);
((NULL_message)data).ReadFromDB();
bool success = true;
if (CommunicationThroughCommunicationLayer)
{
success = SendReceive();
}
if (success)
{
myStatistic.IncStRxFrameCounter();
}
myStatistic.RxDataBlock(success);
return(AL_ReadData_Result.ALRes_Success);
}
}
/// <summary>
/// Send values to the data provider
/// </summary>
/// <param name="data">
/// Data to be send. Always null after return. Data buffer must be returned to the pool.
/// </param>
/// <param name="retries">Number of retries to wrtie data.</param>
/// <returns>Result of the operation.</returns>
AL_ReadData_Result IApplicationLayerMaster.WriteData(ref IWriteValue data, byte retries)
{
lock (this)
{
InterFrameStopwatch.Reset();
InterFrameStopwatch.Start();
m_wPackNum++;
myStatistic.IncStTxFrameCounter();
if ((m_errorfrequency > 0) && (m_rPackNum % (100 / (ulong)m_errorfrequency)) == 0)
{
data.ReturnEmptyEnvelope();
data = null;
myStatistic.IncStRxFragmentedCounter();
myStatistic.TxDataBlock(false);
return(AL_ReadData_Result.ALRes_DatTransferErrr);
}
((Message)data).WriteToDB();
data.ReturnEmptyEnvelope();
data = null;
myStatistic.IncStTxFrameCounter();
myStatistic.IncStRxFrameCounter();
myStatistic.TxDataBlock(true);
myStatistic.TimeMaxResponseDelayAdd(InterFrameStopwatch.ElapsedMilliseconds);
return(AL_ReadData_Result.ALRes_Success);
}
}
