/// <summary>
/// 打开PLC
/// </summary>
private void OpenPlc()
{
if (string.IsNullOrEmpty(comboPlcList.Text))
{
throw new Exception("PLC端口不能为空");
}
if (null == _plcSerialPort)
{
_plcSerialPort = new PLCSerialPort(comboPlcList.Text, null);
}
else
{
var portName = _plcSerialPort.GetPortName();
if (!portName.Equals(comboPlcList.Text))
{
//如果端口不通的话,就先关闭原来的port
_plcSerialPort.Close();
_plcSerialPort = new PLCSerialPort(comboPlcList.Text, null);
}
}
var flag = _plcSerialPort.Open();
if (!flag)
{
throw new Exception("打开PLC失败");
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
try
{
//关闭串口
_pmjSerialPort?.Close();
//
_plcSerialPort?.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}