/// <summary>
/// shutdown the connection
/// </summary>
private void Shutdown()
{
plc.Close();
plc = null;
bt_connect.Enabled = true;
ip.Enabled = true;
port.Enabled = true;
transport_type.Enabled = true;
bt_close.Enabled = false;
bt_connection_data_read.Enabled = false;
bt_speed_test.Enabled = false;
groupWord.Enabled = false;
groupBit.Enabled = false;
groupDialogText.Enabled = false;
UpdateNodesEnabled();
}
/// <summary>
/// try to connect to the plc
/// </summary>
private void Connect()
{
if (string.IsNullOrWhiteSpace(ip.Text) || string.IsNullOrWhiteSpace(port.Text))
return;
try
{
mcOMRON.TransportType protocol = (mcOMRON.TransportType) transport_type.SelectedItem;
plc = new OmronPLC(protocol);
IPAddress ipAddress = IPAddress.Parse(ip.Text);
int port = Convert.ToInt32(this.port.Text);
switch(protocol)
{
case mcOMRON.TransportType.Tcp:
tcpFINSCommand tcpFinsCommand = (tcpFINSCommand) plc.FinsCommand;
tcpFinsCommand.SetTCPParams(ipAddress, port);
break;
case mcOMRON.TransportType.Udp:
if (string.IsNullOrWhiteSpace(source_node.Text) || string.IsNullOrWhiteSpace(destination_node.Text))
return;
int sa1 = Convert.ToInt32(source_node.Text);
int da1 = Convert.ToInt32(destination_node.Text);
udpFINSCommand udpFinsCommand = (udpFINSCommand) plc.FinsCommand;
udpFinsCommand.SetUDPParams(ipAddress, port, sa1, da1);
break;
}
// connection
//
if (! plc.Connect())
{
throw new Exception(plc.LastError);
}
if (protocol == mcOMRON.TransportType.Tcp)
{
tcpFINSCommand tcpFinsCommand = (tcpFINSCommand) plc.FinsCommand;
destination_node.Text = tcpFinsCommand.DA1.ToString();
source_node.Text = tcpFinsCommand.SA1.ToString();
}
// set UI
//
bt_connect.Enabled = false;
ip.Enabled = false;
this.port.Enabled = false;
destination_node.Enabled = false;
source_node.Enabled = false;
transport_type.Enabled = false;
bt_close.Enabled = true;
bt_connection_data_read.Enabled = true;
bt_speed_test.Enabled = true;
groupWord.Enabled = true;
groupBit.Enabled = true;
groupDialogText.Enabled = true;
dialog.Clear();
}
catch (Exception ex)
{
MessageBox.Show("Connect() error: " + ex.Message);
}
}