Reference
OpcMonitoredItem Class
Represents a node and one of its attributes (= node data) to subscribe to monitor data changes or events on the node.
Reference
OpcMonitoredItem Class
- Namespace
- Opc.UaFx.Client
- Assembly
- Opc.UaFx.Advanced.dll
- Package
- Opc.UaFx.Advanced v2.59.0
- Members
- OpcMonitoredItem Members
- Also in
- Opc.UaFx.Client
Represents a node and one of its attributes (= node data) to subscribe to monitor data changes or events on the node.
Syntax
csharp
public class OpcMonitoredItemvbnet
Public Class OpcMonitoredItemInheritance
Object → OpcMonitoredItem
Constructors
| Name | Description |
|---|---|
| OpcMonitoredItem | Initializes a new instance of the OpcMonitoredItem class using the nodeId and attribute specified. |
Properties
| Name | Description |
|---|---|
| Attribute | Gets or sets the OpcAttribute to monitor. |
| CacheQueueSize | Gets or sets the total number of notifications which can be queued in the OpcMonitoredItem related notification cache. |
| ClientID | Gets the client-assigned unique identifier for this OpcMonitoredItem. |
| DisplayName | Gets or sets the name of the OpcMonitoredItem used just for display purpose in the client application. |
| Encoding | Gets or sets the name of the data encoding to use. |
| Filter | Gets or sets the filter to evaluate while generating notifications for this OpcMonitoredItem. |
| IndexRange | Gets or sets the range of array indeces to monitor. |
| IsCreated | Gets a value indicating whether this OpcMonitoredItem has been created on the server. |
| IsModified | Gets a value indicating whether this OpcMonitoredItem has been modified since it has been created on the server or since its previous changes has been committed to the server. |
| LastDataChange | Gets the last data change-related notification data received from the server. |
| LastEvent | Gets the last event-related notification data received from the server. |
| LastNotification | Gets the last notification received from the server. |
| MonitoringMode | Gets or sets the monitoring mode which applies to the monitored item. |
| NodeCategory | Gets or sets the kind of node to monitor. |
| NodeId | Gets or sets the node identifier of the node to monitor. |
| QueueMode | Gets or sets the mode used to enqueue and dequeue notification data items. |
| QueueSize | Gets or sets a value which defines the requested total number of notifications the server shall queue for this OpcMonitoredItem. |
| RelativePath | Gets or sets the relative path to the node to monitor starting at the node identified by the NodeId. |
| ResolvedNodeId | Gets the resolved node identifier of the node to monitor. |
| SamplingInterval | Gets or sets the requested number of milliseconds of the interval within the server have to access and evaluate this OpcMonitoredItem. |
| Status | Gets the status information which defines the servers ability to define/provide a monitored item configured like this OpcMonitoredItem. |
| Subscription | Gets the OpcSubscription this OpcMonitoredItem belongs to. |
| Tag | Gets or sets the object that contains additional user data about the monitored item. |
Methods
| Name | Description |
|---|---|
| On | Raises the Data |
| OnEventReceived | Raises the EventReceived event of the OpcMonitoredItem. |
| ToString | Returns a string that represents the current OpcMonitoredItem. |
Events
| Name | Description |
|---|---|
| Data | Occurs when a data change notification has been received. |
| EventReceived | Occurs when an event notification has been received. |
Applies to
| Package | Versions |
|---|---|
| Opc. | v2. |