public override byte[] PackRequest()
{
byte[] request = new byte[20];
DNP3ReadCommandParameters commadnParam = (DNP3ReadCommandParameters)CommandParameters;
CommandParameters.Length = 0x0d; //20 - 2*(2 CRC) - 2 Start - 1 len
Buffer.BlockCopy(headerBuilder.Build(CommandParameters), 0, request, 0, 10);
request[10] = commadnParam.TransportControl;
request[11] = commadnParam.AplicationControl;
request[12] = commadnParam.FunctionCode;
Buffer.BlockCopy(BitConverter.GetBytes(IPAddress.HostToNetworkOrder((short)commadnParam.ObjectTypeField)), 0, request, 13, 2);
request[15] = commadnParam.Qualifier;
request[16] = (byte)commadnParam.RangeField;
request[17] = (byte)commadnParam.RangeField;
ushort crc = 0;
for (int i = 10; i < 18; i++)
{
CrcCalculator.computeCRC(request[i], ref crc);
}
crc = (ushort)(~crc);
Buffer.BlockCopy(BitConverter.GetBytes(crc), 0, request, 18, 2);
return(request);
}
public void ExecuteReadCommand(RegisterType type, uint index)
{
log.Log(new SCADA.Common.Logging.LogEventModel()
{
EventType = SCADA.Common.Logging.LogEventType.INFO, Message = $"ReadCommand ({type},{index})"
});
DNP3ReadCommandParameters dnp3CommandParam = new DNP3ReadCommandParameters(GetApplicationSequence(), (byte)DNP3FunctionCode.READ, GetTypeField(type),
(byte)Qualifier.PREFIX_2_OCTET_COUNT_OF_OBJECTS_2_OCTET, index, GetTransportSequence());
IDNP3Function dnp3Fn = DNP3FunctionFactory.CreateReadFunction(dnp3CommandParam);
this.functionExecutor.EnqueueCommand(dnp3Fn);
}
public static IDNP3Function CreateReadFunction(DNP3ReadCommandParameters parameters)
{
return(new Read(parameters));
}
