Reference
OpcNodeHistorian Class
Provides and maintains the history of the values of an OpcVariableNode in memory.
Reference
OpcNodeHistorian Class
- Namespace
- Opc.UaFx.Server
- Assembly
- Opc.UaFx.Advanced.dll
- Package
- Opc.UaFx.Advanced v2.59.0
- Members
- OpcNodeHistorian Members
Provides and maintains the history of the values of an OpcVariableNode in memory.
Syntax
csharp
public class OpcNodeHistorianvbnet
Public Class OpcNodeHistorianInheritance
Object → OpcNodeHistorian
Implements
Remarks
The node manager uses the historian for the history services of the node if RetrieveNodeHistoryProvider returns the historian for the node.
Constructors
| Name | Description |
|---|---|
| OpcNodeHistorian | Initializes a new instance of the OpcNodeHistorian class using the owner and node specified. |
Properties
| Name | Description |
|---|---|
| Auto | Gets or sets a value indicating whether the historian adds the value of the Node to the History whenever the value of the node changes. |
| History | Gets the history of the values of the Node. |
| ModifiedHistory | Gets the history of the modifications of the History through the history services. |
| Node | Gets the node whose history the historian maintains. |
| Owner | Gets the node manager which provides the Node. |
| SyncRoot | Gets the object used to synchronize the access to the historian. |
Methods
| Name | Description |
|---|---|
| CreateHistory | |
| DeleteHistory | |
| ReadHistory | |
| ReplaceHistory | |
| UpdateHistory |
Applies to
| Package | Versions |
|---|---|
| Opc. | v2. |