public ModbusTcpAdu(ushort transactionID, byte unitID, ModbusMessage message)
{
this.message = message;
adu = new byte[7 + message.Length];
BitHelper.WriteBuffer(adu, transactionID, TransactionIDOffset);
BitHelper.WriteBuffer(adu, message.Length, LengthOffset);
adu[UnitIDOffset] = unitID;
Buffer.BlockCopy(message.PDU, 0, adu, 7, message.Length);
}
/// <summary></summary>
/// <param name="isRequest">Indentify wether modbus message is request type</param>
public ModbusTcpAdu(byte[] buffer, bool isRequest)
{
adu = buffer;
if (ProtocolID != 0)
{
throw new IntegrityViolationException();
}
if (Length != (buffer.Length - 6))
{
throw new IntegrityViolationException();
}
byte[] pduSegment = new byte[buffer.Length - 7];
Buffer.BlockCopy(buffer, 7, pduSegment, 0, pduSegment.Length);
if (isRequest)
{
message = ModbusRequest.ParseBuffer(pduSegment);
}
else
{
message = ModbusResponse.ParseBuffer(pduSegment);
}
}
public ModbusTcpAdu(ModbusMessage message)
: this(0x0000, 0xff, message)
{
}
public ModbusTcpAdu(ushort transactionID, ModbusMessage message)
: this(transactionID, 0xff, message)
{
}
