using System; using System.Collections.Generic; using System.IO.Ports; using System.Linq; using System.Text; using System.Threading; using System.Threading.Tasks; namespace KHModbus { class SerialConnectionSingleton { private static SerialConnectionSingleton SerialConnection; public object lockSend = new object(); private SerialPort mSerialPort; List _readPacket; ManualResetEvent _eventReset = new ManualResetEvent(false); int responseLength; bool isWatingResponse; public static SerialConnectionSingleton Instance() { if (SerialConnection == null) { SerialConnection = new SerialConnectionSingleton(); } return SerialConnection; } public void InitialModBus() { mSerialPort = new SerialPort(); mSerialPort.PortName = "COM1"; mSerialPort.BaudRate = 9600; mSerialPort.Parity = Parity.None; mSerialPort.StopBits = StopBits.One; mSerialPort.DataBits = 8; //_serialPort.ReadTimeout = 500; SlaveNo = 1; responseLength = 0; isWatingResponse = false; _readPacket = new List(); mSerialPort.DataReceived += DataReceived; } private void DataReceived(object sender, SerialDataReceivedEventArgs e) { if (isWatingResponse) { Thread.Sleep(100); SerialPort port = (SerialPort)sender; // 현재까지 도착한 데이타 모두 읽기 byte[] vs = new byte[responseLength]; port.Read(vs, 0, responseLength); _readPacket.AddRange(vs); isWatingResponse = false; _eventReset.Set(); } } public bool IsOpen() { try { if(mSerialPort.IsOpen) { return true; }else { return Open(); } } catch (Exception ex) { return false; } } public bool Open() { try { mSerialPort.Open(); return true; } catch (Exception ex) { return false; } } public byte[] ReadBit(byte functionCode, ushort startAddress, ushort numberOfBit) { lock (lockSend) { byte[] byteStartAddress = BitConverter.GetBytes(startAddress); byte[] byteLength = BitConverter.GetBytes(numberOfBit); List packet = new List() { SlaveNo, functionCode, byteStartAddress[1], byteStartAddress[0], byteLength[1], byteLength[0] }; packet.AddRange(BitConverter.GetBytes(ComputeCrc(packet.ToArray()))); _readPacket.Clear(); // slave, functionCode, length, (byte high, byte low)n + crc1 + crc2 responseLength = 3 + numberOfBit / 8 + 2; isWatingResponse = true; mSerialPort.Write(packet.ToArray(), 0, packet.Count); _eventReset.WaitOne(500); _eventReset.Reset(); //byte[] readPacket = new byte[3 + length * 2 + 2]; if (_readPacket.Count == 0) { return new byte[1] { 0 }; } var crcCheck = _readPacket.Take(_readPacket.Count - 2).ToArray(); byte[] computedReadCrc = BitConverter.GetBytes(ComputeCrc(crcCheck)); if (_readPacket[_readPacket.Count - 2] != computedReadCrc[0] || _readPacket[_readPacket.Count - 1] != computedReadCrc[1]) { return new byte[1] { 0 }; } else { _readPacket.RemoveAt(0); _readPacket.RemoveAt(0); _readPacket.RemoveAt(0); _readPacket.RemoveAt(_readPacket.Count - 1); _readPacket.RemoveAt(_readPacket.Count - 1); return _readPacket.ToArray(); } } } public string[,] DataReadHolding(string Addr, string Length) { byte[] Data = SerialConnectionSingleton.Instance().ReadWords(1, 4, Convert.ToUInt16(Addr), Convert.ToUInt16(Length)); if (Data == null) return null; ushort resultushort = 0; if (Data.Length == 2) { resultushort = (ushort)((((byte)Data[0]) * 256) + ((byte)Data[1])); } string[,] result = new string[1, 2]; result[0, 0] = (Convert.ToInt32(Addr)).ToString(); result[0, 1] = resultushort.ToString(); return result; } public ushort ReadWords_To_ushort(byte SetSlaveNo, byte functionCode, ushort startAddress, ushort length) { var resultBit = SerialConnectionSingleton.Instance().ReadWords(SetSlaveNo, functionCode, startAddress, length); ushort resultushort = 0; if (resultBit.Length == 2) { resultushort = (ushort)((((byte)resultBit[0]) * 256) + ((byte)resultBit[1])); } return resultushort; } public int ReadWords_To_int(byte SetSlaveNo, byte functionCode, ushort startAddress, ushort length) { var resultBit = SerialConnectionSingleton.Instance().ReadWords(SetSlaveNo, functionCode, startAddress, length); int resultushort = 0; if (resultBit.Length == 4) { resultushort = (int)((((int)resultBit[0]) * (256 * 256 * 256)) + (((int)resultBit[1]) * 65536) + (((int)resultBit[2]) * 256) + ((int)resultBit[3])); } return resultushort; } public byte[] ReadWords(byte SetSlaveNo, byte functionCode, ushort startAddress, ushort length) { lock (lockSend) { byte[] byteStartAddress = BitConverter.GetBytes(startAddress); byte[] byteLength = BitConverter.GetBytes(length); List packet = new List() { SetSlaveNo, functionCode, byteStartAddress[1], byteStartAddress[0], byteLength[1], byteLength[0] }; packet.AddRange(BitConverter.GetBytes(ComputeCrc(packet.ToArray()))); _readPacket.Clear(); // slave, functionCode, length, (byte high, byte low)n + crc1 + crc2 responseLength = 3 + length * 2 + 2; isWatingResponse = true; mSerialPort.Write(packet.ToArray(), 0, packet.Count); _eventReset.WaitOne(500); _eventReset.Reset(); //byte[] readPacket = new byte[3 + length * 2 + 2]; if (_readPacket.Count == 0) { return new byte[1] { 0 }; } var crcCheck = _readPacket.Take(_readPacket.Count - 2).ToArray(); byte[] computedReadCrc = BitConverter.GetBytes(ComputeCrc(crcCheck)); if (_readPacket[_readPacket.Count - 2] != computedReadCrc[0] || _readPacket[_readPacket.Count - 1] != computedReadCrc[1]) { return new byte[1] { 0 }; } else { _readPacket.RemoveAt(0); _readPacket.RemoveAt(0); _readPacket.RemoveAt(0); _readPacket.RemoveAt(_readPacket.Count - 1); _readPacket.RemoveAt(_readPacket.Count - 1); return _readPacket.ToArray(); } } } //public byte[] ReadWords(byte functionCode, ushort startAddress, ushort length) //{ // lock (lockSend) // { // byte[] byteStartAddress = BitConverter.GetBytes(startAddress); // byte[] byteLength = BitConverter.GetBytes(length); // List packet = new List() { SlaveNo, functionCode, byteStartAddress[1], byteStartAddress[0], byteLength[1], byteLength[0] }; // packet.AddRange(BitConverter.GetBytes(ComputeCrc(packet.ToArray()))); // _readPacket.Clear(); // // slave, functionCode, length, (byte high, byte low)n + crc1 + crc2 // responseLength = 3 + length * 2 + 2; // isWatingResponse = true; // mSerialPort.Write(packet.ToArray(), 0, packet.Count); // _eventReset.WaitOne(500); // _eventReset.Reset(); // //byte[] readPacket = new byte[3 + length * 2 + 2]; // if (_readPacket.Count == 0) // { // return new byte[1] { 0 }; // } // var crcCheck = _readPacket.Take(_readPacket.Count - 2).ToArray(); // byte[] computedReadCrc = BitConverter.GetBytes(ComputeCrc(crcCheck)); // if (_readPacket[_readPacket.Count - 2] != computedReadCrc[0] || _readPacket[_readPacket.Count - 1] != computedReadCrc[1]) // { // return new byte[1] { 0 }; // } // else // { // _readPacket.RemoveAt(0); // _readPacket.RemoveAt(0); // _readPacket.RemoveAt(0); // _readPacket.RemoveAt(_readPacket.Count - 1); // _readPacket.RemoveAt(_readPacket.Count - 1); // return _readPacket.ToArray(); // } // } //} public UInt16 ComputeCrc(byte[] data) { ushort crc = 0xFFFF; foreach (byte datum in data) { crc = (ushort)((crc >> 8) ^ CrcTable[(crc ^ datum) & 0xFF]); } return crc; } private readonly ushort[] CrcTable = { 0X0000, 0XC0C1, 0XC181, 0X0140, 0XC301, 0X03C0, 0X0280, 0XC241, 0XC601, 0X06C0, 0X0780, 0XC741, 0X0500, 0XC5C1, 0XC481, 0X0440, 0XCC01, 0X0CC0, 0X0D80, 0XCD41, 0X0F00, 0XCFC1, 0XCE81, 0X0E40, 0X0A00, 0XCAC1, 0XCB81, 0X0B40, 0XC901, 0X09C0, 0X0880, 0XC841, 0XD801, 0X18C0, 0X1980, 0XD941, 0X1B00, 0XDBC1, 0XDA81, 0X1A40, 0X1E00, 0XDEC1, 0XDF81, 0X1F40, 0XDD01, 0X1DC0, 0X1C80, 0XDC41, 0X1400, 0XD4C1, 0XD581, 0X1540, 0XD701, 0X17C0, 0X1680, 0XD641, 0XD201, 0X12C0, 0X1380, 0XD341, 0X1100, 0XD1C1, 0XD081, 0X1040, 0XF001, 0X30C0, 0X3180, 0XF141, 0X3300, 0XF3C1, 0XF281, 0X3240, 0X3600, 0XF6C1, 0XF781, 0X3740, 0XF501, 0X35C0, 0X3480, 0XF441, 0X3C00, 0XFCC1, 0XFD81, 0X3D40, 0XFF01, 0X3FC0, 0X3E80, 0XFE41, 0XFA01, 0X3AC0, 0X3B80, 0XFB41, 0X3900, 0XF9C1, 0XF881, 0X3840, 0X2800, 0XE8C1, 0XE981, 0X2940, 0XEB01, 0X2BC0, 0X2A80, 0XEA41, 0XEE01, 0X2EC0, 0X2F80, 0XEF41, 0X2D00, 0XEDC1, 0XEC81, 0X2C40, 0XE401, 0X24C0, 0X2580, 0XE541, 0X2700, 0XE7C1, 0XE681, 0X2640, 0X2200, 0XE2C1, 0XE381, 0X2340, 0XE101, 0X21C0, 0X2080, 0XE041, 0XA001, 0X60C0, 0X6180, 0XA141, 0X6300, 0XA3C1, 0XA281, 0X6240, 0X6600, 0XA6C1, 0XA781, 0X6740, 0XA501, 0X65C0, 0X6480, 0XA441, 0X6C00, 0XACC1, 0XAD81, 0X6D40, 0XAF01, 0X6FC0, 0X6E80, 0XAE41, 0XAA01, 0X6AC0, 0X6B80, 0XAB41, 0X6900, 0XA9C1, 0XA881, 0X6840, 0X7800, 0XB8C1, 0XB981, 0X7940, 0XBB01, 0X7BC0, 0X7A80, 0XBA41, 0XBE01, 0X7EC0, 0X7F80, 0XBF41, 0X7D00, 0XBDC1, 0XBC81, 0X7C40, 0XB401, 0X74C0, 0X7580, 0XB541, 0X7700, 0XB7C1, 0XB681, 0X7640, 0X7200, 0XB2C1, 0XB381, 0X7340, 0XB101, 0X71C0, 0X7080, 0XB041, 0X5000, 0X90C1, 0X9181, 0X5140, 0X9301, 0X53C0, 0X5280, 0X9241, 0X9601, 0X56C0, 0X5780, 0X9741, 0X5500, 0X95C1, 0X9481, 0X5440, 0X9C01, 0X5CC0, 0X5D80, 0X9D41, 0X5F00, 0X9FC1, 0X9E81, 0X5E40, 0X5A00, 0X9AC1, 0X9B81, 0X5B40, 0X9901, 0X59C0, 0X5880, 0X9841, 0X8801, 0X48C0, 0X4980, 0X8941, 0X4B00, 0X8BC1, 0X8A81, 0X4A40, 0X4E00, 0X8EC1, 0X8F81, 0X4F40, 0X8D01, 0X4DC0, 0X4C80, 0X8C41, 0X4400, 0X84C1, 0X8581, 0X4540, 0X8701, 0X47C0, 0X4680, 0X8641, 0X8201, 0X42C0, 0X4380, 0X8341, 0X4100, 0X81C1, 0X8081, 0X4040 }; public int BaudRate { get { return mSerialPort.BaudRate; } set { mSerialPort.BaudRate = value; } } public Parity Parity { get { return mSerialPort.Parity; } set { mSerialPort.Parity = value; } } public StopBits StopBits { get { return mSerialPort.StopBits; } set { mSerialPort.StopBits = value; } } public int DataBits { get { return mSerialPort.DataBits; } set { mSerialPort.DataBits = value; } } public string PortName { get { return mSerialPort.PortName; } set { mSerialPort.PortName = value; } } public int ReadTimeout { get { return mSerialPort.ReadTimeout; } set { mSerialPort.ReadTimeout = value; } } private byte _slaveNo; public byte SlaveNo { get { return _slaveNo; } set { _slaveNo = value; } } } }