static void UaRxxWriter(XElement tag, object value)
{
using (var uaClient = new EasyUAClient())
{
uaClient.WriteValue(
new UAWriteValueArguments(
GetElementAttribute(tag, "ua", "endpoint"),
$"ns=2;s={tag.Parent.Attribute("name").Value}.{ tag.Attribute("node").Value}",
value
)
);
}
}
public static void Overload1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain data nodes under "Objects" node
UANodeElementCollection nodeElementCollection = easyUAClient.BrowseDataNodes(
"http://opcua.demo-this.com:51211/UA/SampleServer"); // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
// Display results
foreach (UANodeElement nodeElement in nodeElementCollection)
{
Console.WriteLine();
Console.WriteLine("nodeElement.NodeId: {0}", nodeElement.NodeId);
Console.WriteLine("nodeElement.DisplayName: {0}", nodeElement.DisplayName);
}
// Example output:
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2253
//nodeElement.DisplayName: Server
//
//nodeElement.NodeId: nsu=http://test.org/UA/Data/;i=10157
//nodeElement.DisplayName: Data
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/Boiler/;i=1240
//nodeElement.DisplayName: Boilers
//
//nodeElement.NodeId: nsu=http://samples.org/UA/memorybuffer;i=1025
//nodeElement.DisplayName: MemoryBuffers
}
public static void TestSuccess()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Modify data of nodes' attributes
OperationResult[] operationResultArray = easyUAClient.WriteMultiple(new[]
{
new UAWriteArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10221",
new UAAttributeData(23456, UASeverity.GoodOrSuccess, DateTime.UtcNow)),
new UAWriteArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10226",
new UAAttributeData(2.34567890, UASeverity.GoodOrSuccess, DateTime.UtcNow)),
new UAWriteArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10227",
new UAAttributeData("ABC", UASeverity.GoodOrSuccess, DateTime.UtcNow))
// Writing server timestamp is not supported by the sample server.
});
// The UA Test Server does not support this, and therefore failures will occur.
for (int i = 0; i < operationResultArray.Length; i++)
{
if (operationResultArray[i].Succeeded)
{
Console.WriteLine("Result {0}: success", i);
}
else
{
Console.WriteLine("Result {0}: {1}", i, operationResultArray[i].Exception.GetBaseException().Message);
}
}
}
public static void Main1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain values. By default, the Value attributes of the nodes will be read.
ValueResult[] valueResultArray = easyUAClient.ReadMultipleValues(new[]
{
new UAReadArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10845"),
new UAReadArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10853"),
new UAReadArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10855")
});
// Display results
foreach (ValueResult valueResult in valueResultArray)
{
Console.WriteLine("Value: {0}", valueResult.Value);
}
// Example output:
//
//Value: 8
//Value: -8.06803E+21
//Value: Strawberry Pig Banana Snake Mango Purple Grape Monkey Purple? Blueberry Lemon^
}
// ua simulator hard coded + hard coded config
static void UaRxSim()
{
Clear();
using (new ConsoleColourer(Yellow, Black))
WriteLine("reactive UA simulation! Press a key to quit.");
var uaClient = new EasyUAClient();
var rxUaSubscription = UAMonitoredItemChangedObservable.Create <int>(new EasyUAMonitoredItemArguments(
"uaState",
"opc.tcp://127.0.0.1:49320/",
"ns=2;s=Channel1.Device1.Tag2",
0)
)
.Subscribe(val =>
{
WriteLine(string.Format("wrote {0} to {1} on {2} being {3}", val.AttributeData.Value, "ns=2;s=Channel1.Device1.Tag1", "ns=2;s=Channel1.Device1.Tag2", val.AttributeData.Value));
uaClient.WriteValue(
new UAWriteValueArguments(
"opc.tcp://127.0.0.1:49320/",
"ns=2;s=Channel1.Device1.Tag1",
val.AttributeData.Value
)
);
}
);
var key = ReadKey();
rxUaSubscription.Dispose();
uaClient.Dispose();
}
private static void BrowseFrom(UANodeDescriptor nodeDescriptor)
{
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Parent node: {0}", nodeDescriptor);
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain notifiers
UANodeElementCollection notifierNodeElementCollection = easyUAClient.BrowseNotifiers(
"opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer",
nodeDescriptor);
// Display notifiers
Console.WriteLine();
Console.WriteLine("Notifiers:");
foreach (UANodeElement notifierNodeElement in notifierNodeElementCollection)
{
Console.WriteLine(notifierNodeElement);
}
// Obtain objects
UANodeElementCollection objectNodeElementCollection = easyUAClient.BrowseObjects(
"opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer",
nodeDescriptor);
// Recurse
foreach (UANodeElement objectNodeElement in objectNodeElementCollection)
{
BrowseFrom(objectNodeElement);
}
}
public static void Main1()
{
// Instantiate the client object and hook events
var easyUAClient = new EasyUAClient();
easyUAClient.EventNotification += easyUAClient_EventNotification;
Console.WriteLine("Subscribing...");
easyUAClient.SubscribeEvent(
"opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer",
UAObjectIds.Server,
1000,
new UAAttributeFieldCollection
{
// Select specific fields using standard operand symbols
UABaseEventObject.Operands.NodeId,
UABaseEventObject.Operands.SourceNode,
UABaseEventObject.Operands.SourceName,
UABaseEventObject.Operands.Time,
// Select specific fields using an event type ID and a simple relative path
UAFilterElements.SimpleAttribute(UAObjectTypeIds.BaseEventType, "/Message"),
UAFilterElements.SimpleAttribute(UAObjectTypeIds.BaseEventType, "/Severity"),
});
Console.WriteLine("Processing event notifications for 30 seconds...");
System.Threading.Thread.Sleep(30 * 1000);
Console.WriteLine("Unsubscribing...");
easyUAClient.UnsubscribeAllMonitoredItems();
Console.WriteLine("Waiting for 5 seconds...");
System.Threading.Thread.Sleep(5 * 1000);
}
public static void TestSuccess()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Modify value of a node
OperationResult[] operationResultArray = easyUAClient.WriteMultipleValues(new[]
{
new UAWriteValueArguments("http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10221", 23456),
new UAWriteValueArguments("http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10226", "This string cannot be converted to Double"),
new UAWriteValueArguments("http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;s=UnknownNode", "ABC")
});
for (int i = 0; i < operationResultArray.Length; i++)
{
if (operationResultArray[i].Succeeded)
{
Console.WriteLine("Result {0}: success", i);
}
else
{
Console.WriteLine("Result {0}: {1}", i, operationResultArray[i].Exception.GetBaseException().Message);
}
}
}
public static void Main1()
{
// Instantiate the client object and hook events
var easyUAClient = new EasyUAClient();
easyUAClient.EventNotification += easyUAClient_EventNotification;
Console.WriteLine("Subscribing...");
easyUAClient.SubscribeEvent(
"opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer",
UAObjectIds.Server,
1000,
new UAEventFilterBuilder(
// Either the severity is >= 500, or the event comes from a specified source node
UAFilterElements.Or(
UAFilterElements.GreaterThanOrEqual(UABaseEventObject.Operands.Severity, 500),
UAFilterElements.Equals(
UABaseEventObject.Operands.SourceNode,
new UANodeId("nsu=http://opcfoundation.org/Quickstarts/AlarmCondition;ns=2;s=1:Metals/SouthMotor"))),
UABaseEventObject.AllFields));
Console.WriteLine("Processing event notifications for 30 seconds...");
System.Threading.Thread.Sleep(30 * 1000);
Console.WriteLine("Unsubscribing...");
easyUAClient.UnsubscribeAllMonitoredItems();
Console.WriteLine("Waiting for 5 seconds...");
System.Threading.Thread.Sleep(5 * 1000);
}
public static void Overload1()
{
var easyUAClient = new EasyUAClient();
easyUAClient.DataChangeNotification += easyUAClient_DataChangeNotification;
Console.WriteLine("Subscribing...");
int handle = easyUAClient.SubscribeDataChange(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
"nsu=http://test.org/UA/Data/;i=10853",
1000);
Console.WriteLine("Processing monitored item changed events for 10 seconds...");
System.Threading.Thread.Sleep(10 * 1000);
Console.WriteLine("Changing subscription...");
easyUAClient.ChangeMonitoredItemSubscription(handle, 100);
Console.WriteLine("Processing monitored item changed events for 10 seconds...");
System.Threading.Thread.Sleep(10 * 1000);
Console.WriteLine("Unsubscribing...");
easyUAClient.UnsubscribeAllMonitoredItems();
Console.WriteLine("Waiting for 5 seconds...");
System.Threading.Thread.Sleep(5 * 1000);
}
public static void Main1()
{
// Instantiate the client object
// In order to use event pull, you must set a non-zero queue capacity upfront.
var easyUAClient = new EasyUAClient {
PullDataChangeNotificationQueueCapacity = 1000
};
Console.WriteLine("Subscribing...");
easyUAClient.SubscribeDataChange(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
"nsu=http://test.org/UA/Data/;i=10853",
1000);
Console.WriteLine("Processing data change events for 1 minute...");
int endTick = Environment.TickCount + 60 * 1000;
do
{
EasyUADataChangeNotificationEventArgs eventArgs = easyUAClient.PullDataChangeNotification(2 * 1000);
if (eventArgs != null)
{
// Handle the notification event
Console.WriteLine(eventArgs);
}
} while (Environment.TickCount < endTick);
}
public void SubscribeToUA(String[] args)
{
resultFile = new System.IO.StreamWriter(args[1], true);
//getting the nodeids and loading them
List <EasyUAMonitoredItemArguments> nodeList = readConf(args);
EasyUAClient easyUAClient = new EasyUAClient();
try
{
UAEndpointDescriptor ud = new UAEndpointDescriptor("opc.tcp://test-opc-ua.powerhub.dk:32402");
EasyUAClient.EngineParameters.CertificateAcceptancePolicy.AcceptAnyCertificate = true;
easyUAClient.MonitoredItemChanged += easyUAClient_MonitoredItemChanged;
easyUAClient.SubscribeMultipleMonitoredItems(nodeList.ToArray <EasyUAMonitoredItemArguments>());
}
catch (Exception ee)
{
Console.WriteLine(ee.ToString());
}
while (true)
{
Thread.Sleep(100);
}
}
public static void Main1()
{
// Instantiate the client object and hook events
var easyUAClient = new EasyUAClient();
easyUAClient.DataChangeNotification += easyUAClient_DataChangeNotification;
Console.WriteLine("Subscribing...");
int[] handleArray = easyUAClient.SubscribeMultipleMonitoredItems(new[]
{
new EasyUAMonitoredItemArguments(null, "http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10845", 1000),
new EasyUAMonitoredItemArguments(null, "http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10853", 1000),
new EasyUAMonitoredItemArguments(null, "http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10855", 1000)
});
Console.WriteLine("Getting monitored item arguments...");
EasyUAMonitoredItemArguments monitoredItemArguments =
easyUAClient.GetMonitoredItemArguments(handleArray[2]);
Console.WriteLine("NodeDescriptor: {0}", monitoredItemArguments.NodeDescriptor);
Console.WriteLine("SamplingInterval: {0}", monitoredItemArguments.MonitoringParameters.SamplingInterval);
Console.WriteLine("PublishingInterval: {0}", monitoredItemArguments.SubscriptionParameters.PublishingInterval);
Console.WriteLine("Waiting for 5 seconds...");
System.Threading.Thread.Sleep(5 * 1000);
Console.WriteLine("Unsubscribing...");
easyUAClient.UnsubscribeAllMonitoredItems();
Console.WriteLine("Waiting for 5 seconds...");
System.Threading.Thread.Sleep(5 * 1000);
}
public static void Main1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain attribute data. By default, the Value attributes of the nodes will be read.
UAAttributeDataResult[] attributeDataResultArray = easyUAClient.ReadMultiple(new[]
{
new UAReadArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10845"),
new UAReadArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10853"),
new UAReadArguments("http://opcua.demo-this.com:51211/UA/SampleServer", "nsu=http://test.org/UA/Data/;i=10855")
});
// Display results
foreach (UAAttributeDataResult attributeDataResult in attributeDataResultArray)
{
Console.WriteLine("AttributeData: {0}", attributeDataResult.AttributeData);
}
// Example output:
//
//AttributeData: 51 {System.Int16} @11/6/2011 1:49:19 PM @11/6/2011 1:49:19 PM; Good
//AttributeData: -1993984 {System.Single} @11/6/2011 1:49:19 PM @11/6/2011 1:49:19 PM; Good
//AttributeData: Yellow% Dragon Cat) White Blue Dog# Green Banana- {System.String} @11/6/2011 1:49:19 PM @11/6/2011 1:49:19 PM; Good
}
// GET api/<controller>
// GET api/<controller>/5
public object Get([FromUri] string[] path, string query = null)
{
var server = ConfigurationManager.AppSettings["opc-server"];
using (var client = new EasyUAClient())
{
UANodeElementCollection nodes = new UANodeElementCollection();
path = path.Where(p => p != null).ToArray(); //.FirstOrDefault()?.Split('/');
var nodePath = new List <UANodeElement>();
if (!path.Any())
{
nodes = client.BrowseObjects(server);
}
else
{
nodePath = GetNode(server, client, path, null).ToList();
if (!nodePath.Any())
{
return(null);
}
nodes = client.BrowseVariables(server, nodePath.Last());
}
return(new { path = path.Select((p, i) => new {
browseName = p,
node = NodeReturn(nodePath.ElementAtOrDefault(i))
}),
children = nodes.Select(NodeReturn) });
}
}
public static void Overload2()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain objects under "Server" node
UANodeElementCollection nodeElementCollection = easyUAClient.BrowseObjects(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
UAObjectIds.Server);
// Display results
foreach (UANodeElement nodeElement in nodeElementCollection)
{
Console.WriteLine();
Console.WriteLine("nodeElement.NodeId: {0}", nodeElement.NodeId);
Console.WriteLine("nodeElement.DisplayName: {0}", nodeElement.DisplayName);
}
// Example output:
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2268
//nodeElement.DisplayName: ServerCapabilities
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2274
//nodeElement.DisplayName: ServerDiagnostics
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2295
//nodeElement.DisplayName: VendorServerInfo
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2296
//nodeElement.DisplayName: ServerRedundancy
}
public static void Main1()
{
// Instantiate the client object
// In order to use event pull, you must set a non-zero queue capacity upfront.
var easyUAClient = new EasyUAClient {
PullEventNotificationQueueCapacity = 1000
};
Console.WriteLine("Subscribing...");
easyUAClient.SubscribeEvent(
"opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer",
UAObjectIds.Server,
1000);
Console.WriteLine("Processing event notifications for 30 seconds...");
int endTick = Environment.TickCount + 30 * 1000;
do
{
EasyUAEventNotificationEventArgs eventArgs = easyUAClient.PullEventNotification(2 * 1000);
if (eventArgs != null)
{
// Handle the notification event
Console.WriteLine(eventArgs);
}
} while (Environment.TickCount < endTick);
}
static IEnumerable <UANodeElement> GetNode(string server, EasyUAClient client, IEnumerable <string> path, IEnumerable <UANodeElement> currentNodes)
{
var _currentNodes = currentNodes ?? new List <UANodeElement>();
if (!path.Any())
{
return(currentNodes);
}
UANodeElementCollection nodes = new UANodeElementCollection();
if (!_currentNodes.Any())
{
nodes = client.BrowseObjects(server);
}
else
{
nodes = client.BrowseVariables(server, currentNodes.Last());
}
var node = nodes.SingleOrDefault(n => n.BrowseName.Name == path.First());
if (node != null)
{
return(GetNode(server, client, path.Skip(1), _currentNodes.Concat(new List <UANodeElement> {
node
})));
}
return(new List <UANodeElement>());
}
public void SubscribeToUA(String[] args)
{
resultFile = new System.IO.StreamWriter(args[1], true);
//getting the nodeids and loading them
List<EasyUAMonitoredItemArguments> nodeList = readConf(args);
EasyUAClient easyUAClient = new EasyUAClient();
try
{
UAEndpointDescriptor ud = new UAEndpointDescriptor("opc.tcp://test-opc-ua.powerhub.dk:32402");
EasyUAClient.EngineParameters.CertificateAcceptancePolicy.AcceptAnyCertificate = true;
easyUAClient.MonitoredItemChanged += easyUAClient_MonitoredItemChanged;
easyUAClient.SubscribeMultipleMonitoredItems(nodeList.ToArray <EasyUAMonitoredItemArguments>());
}
catch (Exception ee)
{
Console.WriteLine(ee.ToString());
}
while (true)
{
Thread.Sleep(100);
}
}
public static void Main1()
{
// Instantiate the client object and hook events
var easyUAClient = new EasyUAClient();
easyUAClient.DataChangeNotification += easyUAClient_DataChangeNotification;
Console.WriteLine("Subscribing...");
int[] handleArray = easyUAClient.SubscribeMultipleMonitoredItems(new[]
{
new EasyUAMonitoredItemArguments(null, "http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10845", 1000),
new EasyUAMonitoredItemArguments(null, "http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10853", 1000),
new EasyUAMonitoredItemArguments(null, "http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10855", 1000)
});
Console.WriteLine("Processing monitored item changed events for 10 seconds...");
System.Threading.Thread.Sleep(10 * 1000);
Console.WriteLine("Unsubscribing...");
easyUAClient.UnsubscribeMultipleMonitoredItems(handleArray);
Console.WriteLine("Waiting for 5 seconds...");
System.Threading.Thread.Sleep(5 * 1000);
}
public static void Overload2()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain properties under "Server" node
UANodeElementCollection nodeElementCollection = easyUAClient.BrowseProperties(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
UAObjectIds.Server);
// Display results
foreach (UANodeElement nodeElement in nodeElementCollection)
{
Console.WriteLine();
Console.WriteLine("nodeElement.NodeId: {0}", nodeElement.NodeId);
Console.WriteLine("nodeElement.DisplayName: {0}", nodeElement.DisplayName);
}
// Example output:
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2254
//nodeElement.DisplayName: ServerArray
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2255
//nodeElement.DisplayName: NamespaceArray
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2267
//nodeElement.DisplayName: ServiceLevel
//
//nodeElement.NodeId: nsu=http://opcfoundation.org/UA/;i=2994
//nodeElement.DisplayName: Auditing }
}
public static void Main1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Modify value of a node
easyUAClient.WriteValue(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
"nsu=http://test.org/UA/Data/;i=10221",
12345);
}
static void UaRxxWriter(XElement tag, object value)
{
using (var uaClient = new EasyUAClient())
{
uaClient.WriteValue(
new UAWriteValueArguments(
GetElementAttribute(tag, "ua", "endpoint"),
$"ns=2;s={tag.Parent.Attribute("name").Value}.{ tag.Attribute("node").Value}",
value
)
);
}
}
public static void Overload1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain value of a node
object value = easyUAClient.ReadValue(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
"nsu=http://test.org/UA/Data/;i=10853");
// Display results
Console.WriteLine("value: {0}", value);
}
public static void Main1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Modify value of a node
easyUAClient.WriteMultipleValues(new[]
{
new UAWriteValueArguments("http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10221", 23456),
new UAWriteValueArguments("http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10226", 2.34567890),
new UAWriteValueArguments("http://opcua.demo-this.com:51211/UA/SampleServer",
"nsu=http://test.org/UA/Data/;i=10227", "ABC")
});
}
//writes a value to a tag as defined by an XElement
static Func <object, object> WriteValue(XElement xElement)
{
return(value =>
{
using (var uaClient = new EasyUAClient())
{
uaClient.WriteValue(
new UAWriteValueArguments(
GetElementAttribute(xElement, "ua", "endpoint"),
$"ns=2;s={xElement.Attribute("node").Value}",
value
)
);
return value;
};
});
}
//writes a value to a tag as defined by an XElement
static Func<object, object> WriteValue(XElement xElement)
{
return value =>
{
using (var uaClient = new EasyUAClient())
{
uaClient.WriteValue(
new UAWriteValueArguments(
GetElementAttribute(xElement, "ua", "endpoint"),
$"ns=2;s={xElement.Attribute("node").Value}",
value
)
);
return value;
};
};
}
public static void Main1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain collection of application elements
UAApplicationElementCollection applicationElementCollection =
easyUAClient.DiscoverServersOnNetwork("opcua.demo-this.com");
// Display results
foreach (UAApplicationElement applicationElement in applicationElementCollection)
{
Console.WriteLine();
Console.WriteLine("Server name: {0}", applicationElement.ServerName);
Console.WriteLine("Discovery URI string: {0}", applicationElement.DiscoveryUriString);
Console.WriteLine("Server capabilities: {0}", applicationElement.ServerCapabilities);
}
}
public static void Overload1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain collection of server elements
UAApplicationElementCollection applicationElementCollection = easyUAClient.DiscoverServers("opcua.demo-this.com");
// Display results
foreach (UAApplicationElement applicationElement in applicationElementCollection)
{
Console.WriteLine("applicationElementCollection[\"{0}\"].ApplicationUriString: {1}",
applicationElement.DiscoveryUriString, applicationElement.ApplicationUriString);
}
// Example output:
// applicationElementCollection["opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"].ApplicationUriString: urn:Test-PC:UA Sample Server
// applicationElementCollection["http://opcua.demo-this.com:51211/UA/SampleServer"].ApplicationUriString: urn:Test-PC:UA Sample Server
}
public static void Main1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain nodes under "Server" node
UANodeElementCollection nodeElementCollection = easyUAClient.BrowseNodes(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
UAObjectIds.Server,
new UABrowseParameters(UANodeClass.All, new [] { UAReferenceTypeIds.References }));
// Display results
foreach (UANodeElement nodeElement in nodeElementCollection)
{
Debug.Assert(nodeElement != null);
Console.WriteLine();
Console.WriteLine("nodeElement.NodeId: {0}", nodeElement.NodeId);
Console.WriteLine("nodeElement.DisplayName: {0}", nodeElement.DisplayName);
}
}
public static void Events()
{
// Instantiate the client object and hook events
var easyUAClient = new EasyUAClient();
easyUAClient.EventNotification += easyUAClient_EventNotification;
Console.WriteLine("Subscribing...");
easyUAClient.SubscribeMultipleMonitoredItems(new[]
{
new EasyUAMonitoredItemArguments("firstState",
"opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer",
UAObjectIds.Server,
new UAMonitoringParameters(1000, new UAEventFilterBuilder(
UAFilterElements.GreaterThanOrEqual(UABaseEventObject.Operands.Severity, 500),
UABaseEventObject.AllFields)))
{
AttributeId = UAAttributeId.EventNotifier
},
new EasyUAMonitoredItemArguments("secondState",
"opc.tcp://opcua.demo-this.com:62544/Quickstarts/AlarmConditionServer",
UAObjectIds.Server,
new UAMonitoringParameters(2000, new UAEventFilterBuilder(
UAFilterElements.Equals(
UABaseEventObject.Operands.SourceNode,
new UANodeId("nsu=http://opcfoundation.org/Quickstarts/AlarmCondition;ns=2;s=1:Metals/SouthMotor")),
UABaseEventObject.AllFields)))
{
AttributeId = UAAttributeId.EventNotifier
},
});
Console.WriteLine("Processing event notifications for 30 seconds...");
System.Threading.Thread.Sleep(30 * 1000);
Console.WriteLine("Unsubscribing...");
easyUAClient.UnsubscribeAllMonitoredItems();
Console.WriteLine("Waiting for 5 seconds...");
System.Threading.Thread.Sleep(5 * 1000);
}
public static void Main1()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
try
{
// Modify data of a node's attribute
easyUAClient.Write(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
"nsu=http://test.org/UA/Data/;i=10221",
new UAAttributeData(12345, UASeverity.GoodOrSuccess, DateTime.UtcNow));
// Writing server timestamp is not supported by the sample server.
// The UA Test Server does not support this, and therefore a failure will occur.
}
catch (UAException uaException)
{
Console.WriteLine("Failure: {0}", uaException.GetBaseException().Message);
}
}
public static void ReadValue()
{
// Instantiate the client object
var easyUAClient = new EasyUAClient();
// Obtain the value, indicating that just the elements 2 to 4 should be returned
object value = easyUAClient.ReadValue(
new UAReadArguments(
"http://opcua.demo-this.com:51211/UA/SampleServer", // or "opc.tcp://opcua.demo-this.com:51210/UA/SampleServer"
"nsu=http://test.org/UA/Data/;ns=2;i=10305",
UAIndexRangeList.OneDimension(2, 4)));
// Cast to typed array
var arrayValue = (Int32[])value;
// Display results
for (int i = 0; i < 3; i++)
{
Console.WriteLine("arrayValue[{0}]: {1}", i, arrayValue[i]);
}
}
// ua simulator hard coded + hard coded config
static void UaRxSim()
{
Clear();
using (new ConsoleColourer(Yellow, Black))
WriteLine("reactive UA simulation! Press a key to quit.");
var uaClient = new EasyUAClient();
var rxUaSubscription = UAMonitoredItemChangedObservable.Create<int>(new EasyUAMonitoredItemArguments(
"uaState",
"opc.tcp://127.0.0.1:49320/",
"ns=2;s=Channel1.Device1.Tag2",
0)
)
.Subscribe(val =>
{
WriteLine(string.Format("wrote {0} to {1} on {2} being {3}", val.AttributeData.Value, "ns=2;s=Channel1.Device1.Tag1", "ns=2;s=Channel1.Device1.Tag2", val.AttributeData.Value));
uaClient.WriteValue(
new UAWriteValueArguments(
"opc.tcp://127.0.0.1:49320/",
"ns=2;s=Channel1.Device1.Tag1",
val.AttributeData.Value
)
);
}
);
var key = ReadKey();
rxUaSubscription.Dispose();
uaClient.Dispose();
}
