/// <summary>
/// Called to connect to a target.
/// </summary>
public void OnConnectTarget(OpcServer server)
{
if (m_target != null)
{
m_target.Disconnect();
m_target.Dispose();
m_target = null;
}
// use the specified server object directly.
m_target = (TsCDaServer)server;
Cursor = Cursors.WaitCursor;
try
{
OpcUserIdentity credentials = null;
do
{
try
{
m_target.Connect(new OpcConnectData(credentials, m_proxy));
break;
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
credentials = new NetworkCredentialsDlg().ShowDialog(credentials);
}while (credentials != null);
// select all filters by default.
m_target.SetResultFilters((int)TsCDaResultFilter.All);
// initialize controls.
SelectTargetCTRL.OnConnect(m_target);
}
catch (Exception e)
{
MessageBox.Show(e.Message);
m_target = null;
}
Cursor = Cursors.Default;
}
/// <summary>
/// Called to disconnect from a server.
/// </summary>
public void OnDisconnect()
{
// disconnect server.
if (server_ != null)
{
try { server_.Disconnect(); }
catch {}
server_.Dispose();
TsCCpxComplexTypeCache.Server = server_ = null;
}
// initialize controls.
subscriptionCtrl_.Initialize(server_);
updatesCtrl_.Initialize(server_);
statusCtrl_.Start(server_);
outputCtrl_.Text = "";
}
/// <summary>
/// Called to disconnect from a server.
/// </summary>
public void OnDisconnect()
{
// disconnect server.
if (m_server != null)
{
try { m_server.Disconnect(); }
catch {}
m_server.Dispose();
TsCCpxComplexTypeCache.Server = m_server = null;
}
// initialize controls.
SubscriptionCTRL.Initialize(m_server);
UpdatesCTRL.Initialize(m_server);
StatusCTRL.Start(m_server);
OutputCTRL.Text = "";
}
public void Run()
{
try
{
const string serverUrl = "opcda://localhost/Technosoftware.DaSample";
Console.WriteLine();
Console.WriteLine("Simple OPC DA Client based on the OPC DA/AE/HDA Client SDK .NET Standard");
Console.WriteLine("------------------------------------------------------------------------");
Console.Write(" Press <Enter> to connect to "); Console.WriteLine(serverUrl);
Console.ReadLine();
Console.WriteLine(" Please wait...");
TsCDaServer myDaServer = new TsCDaServer();
// Connect to the server
myDaServer.Connect(serverUrl);
// Get the status from the server
OpcServerStatus status = myDaServer.GetServerStatus();
Console.WriteLine($" Status of Server is {status.ServerState}");
Console.WriteLine(" Connected, press <Enter> to create an active group object and add several items.");
Console.ReadLine();
// Add a group with default values Active = true and UpdateRate = 500ms
TsCDaSubscriptionState groupState = new TsCDaSubscriptionState {
Name = "MyGroup" /* Group Name*/
};
var group = (TsCDaSubscription)myDaServer.CreateSubscription(groupState);
// Add Items
TsCDaItem[] items = new TsCDaItem[4];
items[0] = new TsCDaItem
{
ItemName = "SimulatedData.Ramp",
ClientHandle = 100,
MaxAgeSpecified = true,
MaxAge = 0,
Active = true,
ActiveSpecified = true
};
// Item Name
// Client Handle
// Read from Cache
items[1] = new TsCDaItem
{
ItemName = "CTT.SimpleTypes.InOut.Integer",
ClientHandle = 150,
Active = true,
ActiveSpecified = true
};
// Item Name
// Client Handle
items[2] = new TsCDaItem
{
ItemName = "CTT.SimpleTypes.InOut.Short",
ClientHandle = 200,
Active = false,
ActiveSpecified = true
};
// Item Name
// Client Handle
items[3] = new TsCDaItem
{
ItemName = "CTT.Arrays.InOut.Word[]", ClientHandle = 250, Active = false, ActiveSpecified = true
};
// Item Name
// Client Handle
// Synchronous Read with server read function (DA 3.0) without a group
TsCDaItemValueResult[] itemValues = myDaServer.Read(items);
for (int i = 0; i < itemValues.GetLength(0); i++)
{
if (itemValues[i].Result.IsError())
{
Console.WriteLine($" Item {itemValues[i].ItemName} could not be read");
}
}
var itemResults = group.AddItems(items);
for (int i = 0; i < itemResults.GetLength(0); i++)
{
if (itemResults[i].Result.IsError())
{
Console.WriteLine($" Item {itemResults[i].ItemName} could not be added to the group");
}
}
Console.WriteLine("");
Console.WriteLine(" Group and items added, press <Enter> to create a data change subscription");
Console.WriteLine(" and press <Enter> again to deactivate the data change subscription.");
Console.WriteLine(" This stops the reception of data change notifications.");
Console.ReadLine();
group.DataChangedEvent += OnDataChangeEvent;
Console.ReadLine();
// Set group inactive
groupState.Active = false;
group.ModifyState((int)TsCDaStateMask.Active, groupState);
Console.WriteLine(" Data change subscription deactivated, press <Enter> to remove all");
Console.WriteLine(" and disconnect from the server.");
group.Dispose();
myDaServer.Disconnect();
myDaServer.Dispose();
Console.ReadLine();
Console.WriteLine(" Disconnected from the server.");
Console.WriteLine();
}
catch (OpcResultException e)
{
Console.WriteLine(" " + e.Message);
Console.ReadLine();
}
catch (Exception e)
{
Console.WriteLine(" " + e.Message);
Console.ReadLine();
}
}