public ModbusRtuRequestHandler(IModbusRtuSerialPort serialPort, ModbusRtuServer rtuServer) : base(rtuServer, 256)
{
_serialPort = serialPort;
_serialPort.Open();
base.Start();
}
internal void Start(IModbusRtuSerialPort serialPort)
{
if (this.Parity == Parity.None && this.StopBits != StopBits.Two)
{
throw new InvalidOperationException(ErrorMessage.Modbus_NoParityRequiresTwoStopBits);
}
// "base..." is important!
base.Stop();
base.Start();
this.RequestHandler = new ModbusRtuRequestHandler(serialPort, this);
}
internal void Connect(IModbusRtuSerialPort serialPort)
{
if (this.Parity == Parity.None && this.StopBits != StopBits.Two)
{
throw new InvalidOperationException(ErrorMessage.Modbus_NoParityRequiresTwoStopBits);
}
_frameBuffer = new ModbusFrameBuffer(256);
_serialPort?.Close();
_serialPort = serialPort;
_serialPort.Open();
}
/// <summary>
/// Starts the server. It will communicate using the provided <paramref name="serialPort"/>.
/// </summary>
/// <param name="serialPort">The serial port to be used.</param>
public void Start(IModbusRtuSerialPort serialPort)
{
/* According to the spec (https://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf),
* section 2.5.1 RTU Transmission Mode: "... the use of no parity requires 2 stop bits."
* Remove this check to improve compatibility (#56).
*/
//if (this.Parity == Parity.None && this.StopBits != StopBits.Two)
// throw new InvalidOperationException(ErrorMessage.Modbus_NoParityRequiresTwoStopBits);
base.StopProcessing();
base.StartProcessing();
this.RequestHandler = new ModbusRtuRequestHandler(serialPort, this);
}
/// <summary>
/// Starts the server. It will listen on the provided <paramref name="port"/>.
/// </summary>
/// <param name="port">The COM port to be used, e.g. COM1.</param>
public void Start(string port)
{
IModbusRtuSerialPort serialPort = new ModbusRtuSerialPort(new SerialPort(port)
{
BaudRate = this.BaudRate,
Handshake = this.Handshake,
Parity = this.Parity,
StopBits = this.StopBits,
ReadTimeout = this.ReadTimeout,
WriteTimeout = this.WriteTimeout
});
_serialPort = serialPort;
this.Start(serialPort);
}
internal void Connect(IModbusRtuSerialPort serialPort, ModbusEndianness endianness)
{
if (this.Parity == Parity.None && this.StopBits != StopBits.Two)
{
throw new InvalidOperationException(ErrorMessage.Modbus_NoParityRequiresTwoStopBits);
}
base.SwapBytes = BitConverter.IsLittleEndian && endianness == ModbusEndianness.BigEndian ||
!BitConverter.IsLittleEndian && endianness == ModbusEndianness.LittleEndian;
_frameBuffer = new ModbusFrameBuffer(256);
_serialPort?.Close();
_serialPort = serialPort;
_serialPort.Open();
}
internal void Connect(IModbusRtuSerialPort serialPort, ModbusEndianness endianness)
{
/* According to the spec (https://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf),
* section 2.5.1 RTU Transmission Mode: "... the use of no parity requires 2 stop bits."
* Remove this check to improve compatibility (#56).
*/
//if (this.Parity == Parity.None && this.StopBits != StopBits.Two)
// throw new InvalidOperationException(ErrorMessage.Modbus_NoParityRequiresTwoStopBits);
base.SwapBytes = BitConverter.IsLittleEndian && endianness == ModbusEndianness.BigEndian ||
!BitConverter.IsLittleEndian && endianness == ModbusEndianness.LittleEndian;
_frameBuffer = new ModbusFrameBuffer(256);
_serialPort?.Close();
_serialPort = serialPort;
_serialPort.Open();
}
internal void Connect(IModbusRtuSerialPort serialPort)
{
this.Connect(serialPort, ModbusEndianness.LittleEndian);
}
