public void BrowsingAnOpcDaServerLocally()
{
Uri url = UrlBuilder.Build("Matrikon.OPC.Simulation.1");
using (var server = new OpcDaServer(url))
{
// Connect to the server first.
server.Connect();
// Browse elements.
var browser = new OpcDaBrowserAuto(server);
BrowseChildren(browser);
// The output should be like the following:
// #MonitorACLFile (ItemId: #MonitorACLFile, IsHint: False, IsItem: True, HasChildren: False)
// @Clients (ItemId: @Clients, IsHint: False, IsItem: True, HasChildren: False)
// Configured Aliases (ItemId: Configured Aliases, IsHint: False, IsItem: False, HasChildren: True)
// Simulation Items (ItemId: Simulation Items, IsHint: False, IsItem: False, HasChildren: True)
// Bucket Brigade (ItemId: Bucket Brigade, IsHint: False, IsItem: False, HasChildren: True)
// ArrayOfReal8 (ItemId: Bucket Brigade.ArrayOfReal8, IsHint: False, IsItem: True, HasChildren: False)
// ArrayOfString (ItemId: Bucket Brigade.ArrayOfString, IsHint: False, IsItem: True, HasChildren: False)
// Boolean (ItemId: Bucket Brigade.Boolean, IsHint: False, IsItem: True, HasChildren: False)
// Int1 (ItemId: Bucket Brigade.Int1, IsHint: False, IsItem: True, HasChildren: False)
// Int2 (ItemId: Bucket Brigade.Int2, IsHint: False, IsItem: True, HasChildren: False)
// Int4 (ItemId: Bucket Brigade.Int4, IsHint: False, IsItem: True, HasChildren: False)
// ...
}
}
public List <string> getAllTags()
{
Console.Write("this.server.ComObject");
Console.Write(this.server.ComObject);
// Connect to the this.server first.
this.server.Connect();
var browser = new OpcDaBrowserAuto(this.server);
//busca tags presentes e adiciona a lista
return(this.BrowseChildren(browser));
}
//Reads Data from OPC. Fills the Nodelist from PLC
internal IEnumerable <OpcDaBrowseElement> ReadDataToNodeList(string _subStringFromTagName) //e.g. "_CAP - for Capacity tag"
{
//Читаем список переменных из OCP-сервера. Фильтруем переменные-ветви и отбираем те, в именах которых содержится _subStringFromTagName (например "_CAP")
var opcDaElementFilter = new OpcDaElementFilter()
{
ElementType = OpcDaBrowseFilter.Branches
};
var browser = new OpcDaBrowserAuto(_opcServer);
var items = from s in browser.GetElements(_parentNodeDescriptor, opcDaElementFilter)
where s.Name.Contains(_subStringFromTagName)
select s;
return(items);
}
public static OpcInitialData GetInitialData(string opcServerUrl, bool valuesOnly)
{
lock (GetLockObject(opcServerUrl))
{
OpcDaServer server = GetOrCreateServer(opcServerUrl);
var browser = new OpcDaBrowserAuto(server);
OpcDaGroup group = server.AddGroup("DecisionsDataTypeGroup");
OpcNode[] nodes = GetNodesRecursive(browser, group, null);
//now that group has all tags, read all initial values at once:
OpcDaItemValue[] values = group.Read(group.Items, OpcDaDataSource.Device);
server.RemoveGroup(group);
return(new OpcInitialData {
Nodes = valuesOnly ? null : nodes, Values = ConvertToBaseTagValues(values)
});
}
}
private static OpcNode[] GetNodesRecursive(OpcDaBrowserAuto browser, OpcDaGroup group, OpcNode parentNode)
{
OpcDaBrowseElement[] elements = browser.GetElements(parentNode?.FullPath); // fetches from root if null
OpcNode[] results = elements.Select(x => new OpcNode
{
Name = x.Name,
FullPath = x.ItemId,
ItemId = x.IsItem ? x.ItemId : null
}).ToArray();
foreach (OpcNode node in results)
{
GetNodesRecursive(browser, group, node);
}
if (parentNode != null)
{
parentNode.Children = results;
if (!string.IsNullOrEmpty(parentNode.ItemId)) // fetch data types for tags
{
var def = new OpcDaItemDefinition
{
ItemId = parentNode.ItemId
};
OpcDaItemResult[] groupAddResults = group.AddItems(new OpcDaItemDefinition[] { def });
foreach (OpcDaItemResult addResult in groupAddResults)
{
if (addResult.Error.Failed)
{
throw new Exception($"Could not fetch type data for {parentNode.ItemId}");
}
}
OpcDaItem item = group.Items.FirstOrDefault(x => x.ItemId == parentNode.ItemId);
if (item != null)
{
parentNode.TypeName = item.CanonicalDataType.FullName;
}
}
}
return(results);
}
public static TreeNode GetTreeNodes(OpcDaService server)
{
TreeNode hostNode = GetNode(Key(opcdaNode.FullPath + "/" + server.Host));
TreeNode serviceNode = GetNode(Key(hostNode.FullPath + "/" + server.ServiceId));
try
{
OpcDaBrowserAuto browserAuto = new OpcDaBrowserAuto(server.Service);
BrowseChildren(browserAuto, serviceNode);
}
catch (Exception)
{
return(serviceNode);
}
return(serviceNode);
}
