友声 BS3000+ 串口读取重量

/// <summary>
    /// 获取串口称数据
    /// </summary>
    /// <returns></returns>
    public static string GetWeight()
    {
        string weight = "";
        SerialPort myPort = new SerialPort();
        myPort.PortName = "COM2";//端口名
        myPort.BaudRate = 2400; //波特率
        myPort.DataBits = 8;//数据位
        myPort.StopBits = StopBits.One; //停止位
        myPort.Parity = Parity.None;//奇偶校验
        myPort.RtsEnable = true;//　打开RTS ，这步很重要
        try
        {
            myPort.Open(); // 打开端口
        }
        catch (Exception err)
        {
            MessageBoxEx.Show("打开COM口失败", UserHelper.GetUserConfig(UserConfig.title), MessageBoxButtons.OK, MessageBoxIcon.Information);//端口打开失败，返回
            return "";
        }
        string[] Data = new string[10];
        try
        {
            for (int i = 0; i < 5; i++)
            {
                Data[i] = myPort.ReadLine();
            }
        }
        catch (Exception ex)
        {
            throw new CustomException(ex.Message, ExceptionType.Warn);
        }
        int isWT = 0;//稳定状态下获取重量的次数
        for (int i = 0; i < 5; i++)
        {
            if (Data[0].Equals(Data[i]))
            {
                isWT++;
            }
        }
        if (isWT >= 4)
        {
            Data[0] = Data[0].Substring(5).Trim();
            weight = Data[0].Substring(0, Data[0].Length - 1).Trim();
        }
        myPort.Close();
        return weight;
    }