电子称 弹钱箱脉冲

try
            {

                if (this.serialPort1.IsOpen)
                {
                    Thread.Sleep(300);

　　　　　　int num = port1.BytesToRead;
　　　　　　char[] readchar = new char[num];
　　　　　　port1.Read(readchar, 0, num);
　　　　　　string str="";
　　　　　　for (int i = 0; i < 4; i++)//readchar.Length 4位 读取前4位 还有6位的情况
　　　　　　{
　　　　　　str += readchar[i].ToString();
　　　　　　}

　　　　　　return str;
                   
                }
            }
            catch (Exception ex)
            {

            }

public double GetWeight()
{
//权限
//明细
//是否可以称重
try
{
Posset posset = SystemConfig.getPosset();
Printerset printerSet = pl.GetPrintersetList(posset.PosCode).First();
SerialPort sPort = new SerialPort(printerSet.scalesComPort, printerSet.scalesBaudRate.Value, Parity.None, printerSet.scalesDataBits.Value, (StopBits)printerSet.scalesStopBits.Value);
serialPortControl = new SerialPortControl(sPort, port1_datareceived);
serialPortControl.OpenPort();
serialPortControl.SendCommand("$");
Stools.MyLognet.WriteInfo(weight.ToString());
return weight;
}
catch (Exception ex)
{
Stools.MyLognet.WriteInfo("打开端口失败" + ex.Message+DateTime.Now.ToString());
ModernDialog.ShowMessage("打开端口失败", "提示", System.Windows.MessageBoxButton.OK);
return 0;
}
}

private void port1_datareceived(object sender, SerialDataReceivedEventArgs e)
{
try
{
SerialPort port1 = serialPortControl.port1;
StringBuilder currentline = new StringBuilder();
if (port1.IsOpen)
{
Thread.Sleep(500);
while (port1.BytesToRead > 0)
{
char ch = (char)port1.ReadByte();
currentline.Append(ch);
}
string[] currentWeight = currentline.ToString().Split(‘ ‘);
if (!string.IsNullOrEmpty(currentWeight[1]))
{
weight =ArithUtil.div(Double.Parse(currentWeight[1]),1000);
// Stools.MyLognet.WriteInfo(weight.ToString());
}
else
{
return;
}
}
serialPortControl.ClosePort();
}
catch (Exception ex)
{
Stools.MyLognet.WriteInfo("电子秤读取失败" + ex.Message + DateTime.Now.ToString());
ModernDialog.ShowMessage("电子秤读取失败", "提示", System.Windows.MessageBoxButton.OK);
}
finally {
serialPortControl.ClosePort();
}
}

电子称 弹钱箱脉冲

原文：http://www.cnblogs.com/pengde/p/4720512.html