Namespace: Opc.UaFx
Assemblies: Opc.UaFx.Advanced.dll
Defines the different levels indicating in ways the Value attribute can be accessed (read/write) and if it provides current and/or historic data.
C#
[Flags] public enum OpcAccessLevel
Inheritance Object › ValueType › Enum › OpcAccessLevel
Attributes FlagsAttribute
Name | Value | Description |
---|---|---|
None | 0 | The Value attribute cannot accessed and has no event history. |
CurrentRead | 1 | The current data of the Value attribute is readable. |
CurrentWrite | 2 | The current data of the Value attribute can be written. |
CurrentReadOrWrite | 3 | The current data of the Value attribute can be read or written. |
HistoryRead | 4 | The Value attribute provides readable historic data. |
HistoryWrite | 8 | The historic data of the Value attribute can be written. |
HistoryReadOrWrite | 12 | The historic data of the Value attribute is readable or can be written. |
SemanticChange | 16 | Changes of the Value attribute generate semantic change events. |
StatusWrite | 32 | The status information associated with the data of the Value attribute is writable (see Status). |
TimestampWrite | 64 | The current SourceTimestamp of the data of the Value attribute is writable. |