internal byte[] Serialize()
{
var buffer = new DataBuffer(2);
buffer.SetByte(0, DeviceId);
var fn = (byte)Function;
if (IsError)
{
fn = (byte)(fn & Consts.ErrorMask);
buffer.AddByte((byte)ErrorCode);
}
else
{
switch (Function)
{
case FunctionCode.ReadCoils:
case FunctionCode.ReadDiscreteInputs:
case FunctionCode.ReadHoldingRegisters:
case FunctionCode.ReadInputRegisters:
buffer.AddByte((byte)Data.Length);
buffer.AddBytes(Data.Buffer);
break;
case FunctionCode.WriteMultipleCoils:
case FunctionCode.WriteMultipleRegisters:
buffer.AddUInt16(Address);
buffer.AddUInt16(Count);
break;
case FunctionCode.WriteSingleCoil:
case FunctionCode.WriteSingleRegister:
buffer.AddUInt16(Address);
buffer.AddBytes(Data.Buffer);
break;
case FunctionCode.EncapsulatedInterface:
buffer.AddByte((byte)MEIType);
switch (MEIType)
{
case MEIType.CANOpenGeneralReference:
if (Data?.Length > 0)
{
buffer.AddBytes(Data.Buffer);
}
break;
case MEIType.ReadDeviceInformation:
buffer.AddByte((byte)MEICategory);
buffer.AddByte(ConformityLevel);
buffer.AddByte((byte)(MoreRequestsNeeded ? 0xFF : 0x00));
buffer.AddByte(NextObjectId);
buffer.AddByte(ObjectCount);
buffer.AddBytes(Data.Buffer);
break;
default:
throw new NotImplementedException();
}
break;
default:
throw new NotImplementedException();
}
}
buffer.SetByte(1, fn);
var crc = Checksum.CRC16(buffer.Buffer);
buffer.AddBytes(crc);
return(buffer.Buffer);
}
/// <summary>
/// Serializes the request ready to send via serial.
/// </summary>
/// <returns></returns>
public byte[] Serialize()
{
var buffer = new DataBuffer(2);
buffer.SetByte(0, DeviceId);
buffer.SetByte(1, (byte)Function);
switch (Function)
{
case FunctionCode.ReadCoils:
case FunctionCode.ReadDiscreteInputs:
case FunctionCode.ReadHoldingRegisters:
case FunctionCode.ReadInputRegisters:
buffer.AddUInt16(Address);
buffer.AddUInt16(Count);
break;
case FunctionCode.WriteMultipleCoils:
case FunctionCode.WriteMultipleRegisters:
buffer.AddUInt16(Address);
buffer.AddUInt16(Count);
if (Data?.Length > 0)
{
buffer.AddBytes(Data.Buffer);
}
break;
case FunctionCode.WriteSingleCoil:
case FunctionCode.WriteSingleRegister:
buffer.AddUInt16(Address);
if (Data?.Length > 0)
{
buffer.AddBytes(Data.Buffer);
}
break;
case FunctionCode.EncapsulatedInterface:
buffer.AddByte((byte)MEIType);
switch (MEIType)
{
case MEIType.CANOpenGeneralReference:
if (Data?.Length > 0)
{
buffer.AddBytes(Data.Buffer);
}
break;
case MEIType.ReadDeviceInformation:
buffer.AddByte((byte)MEICategory);
buffer.AddByte((byte)MEIObject);
break;
default:
throw new NotImplementedException();
}
break;
default:
throw new NotImplementedException();
}
byte[] crc = Checksum.CRC16(buffer.Buffer);
buffer.AddBytes(crc);
return(buffer.Buffer);
}
/// <summary>
/// Serializes the request ready to send via tcp.
/// </summary>
/// <returns></returns>
internal byte[] Serialize()
{
var buffer = new DataBuffer(8);
buffer.SetUInt16(0, TransactionId);
buffer.SetUInt16(2, 0x0000); // Protocol ID
buffer.SetByte(6, DeviceId);
buffer.SetByte(7, (byte)Function);
switch (Function)
{
case FunctionCode.ReadCoils:
case FunctionCode.ReadDiscreteInputs:
case FunctionCode.ReadHoldingRegisters:
case FunctionCode.ReadInputRegisters:
buffer.AddUInt16(Address);
buffer.AddUInt16(Count);
break;
case FunctionCode.WriteMultipleCoils:
case FunctionCode.WriteMultipleRegisters:
buffer.AddUInt16(Address);
buffer.AddUInt16(Count);
buffer.AddByte((byte)(Data?.Length ?? 0));
if (Data?.Length > 0)
{
buffer.AddBytes(Data.Buffer);
}
break;
case FunctionCode.WriteSingleCoil:
case FunctionCode.WriteSingleRegister:
buffer.AddUInt16(Address);
if (Data?.Length > 0)
{
buffer.AddBytes(Data.Buffer);
}
break;
case FunctionCode.EncapsulatedInterface:
buffer.AddByte((byte)MEIType);
switch (MEIType)
{
case MEIType.CANOpenGeneralReference:
if (Data?.Length > 0)
{
buffer.AddBytes(Data.Buffer);
}
break;
case MEIType.ReadDeviceInformation:
buffer.AddByte((byte)MEICategory);
buffer.AddByte((byte)MEIObject);
break;
default:
throw new NotImplementedException();
}
break;
default:
throw new NotImplementedException();
}
var len = buffer.Length - 6;
buffer.SetUInt16(4, (ushort)len);
return(buffer.Buffer);
}
