C# Modbus Tcp 实现(二)

        CSocketClient info;
        ModbusMaster master;

        //public static ModbusTcp2 Instance = new ModbusTcp2("192.168.0.8", 8000);
        public static ModbusTcp2 Instance = new ModbusTcp2("127.0.0.1", 8000);

        public ModbusTcp2(string ip,int port)
        {
            info = new CSocketClient();

            info.Ip = ip;
            info.Port = port;
            info.ConnectToServer();

            info.GClientRecMsgClass1.ClientRecMsgEvent1 += GClientRecMsgClass1_ClientRecMsgEvent1;

        }

        private void GClientRecMsgClass1_ClientRecMsgEvent1(object o)
        {
             MessageBox.Show(info.RecMessage);
        }

        private string sendStr;
        /// <summary>
        /// 发送string内容
        /// </summary>m
        public string SendString
        {
            get { return sendStr; }
            set
            { 

                sendStr = value;
            }
        }

        /// <summary>
        /// 16进制字符转为字节流
        /// </summary>
        /// <param name="str"></param>
        /// <param name="fromBase"></param>
        /// <returns></returns>
        public static byte[] HexStringToBytes(string str, int fromBase = 16)
        {
            str = str.Replace(" ", "");
            if ((str.Length % 2) != 0)
                str += "";
            byte[] bytes = new byte[str.Length / 2];
            for (int i = 0; i < bytes.Length; i++)
            {
                bytes[i] = Convert.ToByte(str.Substring(i * 2, 2), fromBase);
            }
            return bytes;
        }

   /// <summary>
        /// 字符串转16进制字节数组
        /// </summary>
        /// <param name="hexString"></param>
        /// <returns></returns>
        private static byte[] strToToHexByte(string hexString)
        {
            hexString = hexString.Replace(" ", "");
            if ((hexString.Length % 2) != 0)
                hexString += " ";
            byte[] returnBytes = new byte[hexString.Length / 2];
            for (int i = 0; i < returnBytes.Length; i++)
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
            return returnBytes;
        }
        public  string FloatToHexStr(int f)
        {
            string fStr = "";
            fStr = ByteToHexStr(BitConverter.GetBytes(f));
            return fStr;

        }

        static string ByteToHexStr(byte[] bytes)
        {
            string returnStr = "";
            if (bytes != null)
            {
                for (int i = 0; i < bytes.Length; i++)
                {
                    returnStr += bytes[i].ToString("X2");
                }
            }
            return returnStr;
        }
        string StartToEnd(string str)
        {
            string tmp = str.PadLeft(8,'0');
            string tmp1 = str.Substring(4, 4);
            string tmp2 = str.Substring(0, 4);

            string tmp11 = tmp1.Substring(2, 2);
            string tmp12 = tmp1.Substring(0, 2);

            string tmp21 = tmp2.Substring(2, 2);
            string tmp22 = tmp2.Substring(0, 2);


            return tmp11 + " " + tmp12 + " " + tmp21 + " " + tmp22;
        }

        public void Write(int value,string hexAddress  = "F2 00")
        {
            string tmp1 = FloatToHexStr(value);
            string str = "00 01 00 00 00 0B 01 10 "+ hexAddress + "00 01 04 " /*+ "00 00 0B B8"*/;
            string str2 = FloatToHexStr(value);
            string str3 = StartToEnd(str2);

            //info.SendMsgToServerByte(Combine(HexStringToBytes(str), ModelToBytes(value)));
            info.SendMsgToServerByte(HexStringToBytes(str + str3));
        }