private void BtnConnectClick(object sender, EventArgs e)
{
try
{
switch (CommunicationMode)
{
case CommunicationMode.RTU:
_uart = new SerialPort(PortName, Baud, Parity, DataBits, StopBits);
_uart.Open();
_portClient = _uart.GetClient();
_driver = new ModbusClient(new ModbusRtuCodec()) { Address = SlaveId };
_driver.OutgoingData += DriverOutgoingData;
_driver.IncommingData += DriverIncommingData;
AppendLog(String.Format("Connected using RTU to {0}", PortName));
break;
case CommunicationMode.UDP:
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
_socket.Connect(new IPEndPoint(IPAddress, TCPPort));
_portClient = _socket.GetClient();
_driver = new ModbusClient(new ModbusTcpCodec()) { Address = SlaveId };
_driver.OutgoingData += DriverOutgoingData;
_driver.IncommingData += DriverIncommingData;
AppendLog(String.Format("Connected using UDP to {0}", _socket.RemoteEndPoint));
break;
case CommunicationMode.TCP:
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_socket.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
_socket.SendTimeout = 2000;
_socket.ReceiveTimeout = 2000;
_socket.Connect(new IPEndPoint(IPAddress, TCPPort));
_portClient = _socket.GetClient();
_driver = new ModbusClient(new ModbusTcpCodec()) { Address = SlaveId };
_driver.OutgoingData += DriverOutgoingData;
_driver.IncommingData += DriverIncommingData;
AppendLog(String.Format("Connected using TCP to {0}", _socket.RemoteEndPoint));
break;
}
}
catch (Exception ex)
{
AppendLog(ex.Message);
return;
}
btnConnect.Enabled = false;
buttonDisconnect.Enabled = true;
groupBoxFunctions.Enabled = true;
groupBoxTCP.Enabled = false;
groupBoxRTU.Enabled = false;
groupBoxMode.Enabled = false;
grpExchange.Enabled = false;
}
private void DoDisconnect()
{
if (_socket != null)
{
_socket.Close();
_socket.Dispose();
_socket = null;
}
if (_uart != null)
{
_uart.Close();
_uart.Dispose();
_uart = null;
}
_portClient = null;
_driver = null;
}