/// <summary>
/// Server connection procedure
/// </summary>
/// <param name="urlString">OPC server URL in string format</param>
/// <returns>isConnected</returns>
public bool ConnectServer(string urlString)
{
isConnected = false;
this.url = new Opc.URL(urlString);
factory = new OpcCom.Factory();
server = new Opc.Da.Server(factory, url);
try
{
selectedServer = selectedServer ?? new mServerItem(true);
server.Connect();
if (isConnected = server.IsConnected)
{
OnReportMessage(0, "Server is connected");
server.ServerShutdown -= server_ServerShutdown;
server.ServerShutdown += server_ServerShutdown;
RefreshServerStatus();
}
else
{
OnReportMessage("Server connection fail, unknown error");
}
}
catch (Exception ex)
{
OnReportMessage(ex.Message.ToString());
}
return(isConnected);
}
public exOPCserver()
{
listServers = new ObservableCollection <mServerItem>();
monitoredTags = new ObservableCollection <mTag>();
restoredTagList = new List <mTag>();
messageLog = new List <string>();
logMessage("Message log started");
isConnected = false;
opcSubscription = null;
selectedServer = new mServerItem(true);
selectedServer.ReconnectInterval = 5000;
configureWatchDog();
error = new gErrorEntity(0, "Initialized");
}
public ObservableCollection <mServerItem> GetServers(string hostname)
{
try {
OpcCom.ServerEnumerator discovery = new OpcCom.ServerEnumerator();
if (hostname == "")
{
hostname = "localhost";
}
selectedServer.Host = hostname;
//Get all local OPC DA servers of version 3.0
Opc.Server[] localservers = discovery.GetAvailableServers(Opc.Specification.COM_DA_20, hostname, null);
listServers.Clear();
foreach (Opc.Server srv in localservers)
{
mServerItem si = new mServerItem(true);
si.Name = srv.Name;
si.Description = srv.Locale;
si.UrlString = srv.Url.ToString();
listServers.Add(si);
}
}
catch (Exception ex)
{
OnReportMessage("Opc server enumerator failed");
OnReportMessage(ex.Message);
}
//Get all OPC DA servers of version 2.0 of machine "MyMachine"
//Opc.Server[] hostservers = discovery.GetAvailableServers(Opc.Specification.COM_DA_20, "MNS1-179N", null);
return(listServers);
}