Reference

OpcAccessLevel Enum

Namespace

Opc.UaFx

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Also in

Opc.UaFx.Client

Defines the different levels indicating in ways the Value attribute can be accessed (read/write) and if it provides current and/or historic data.

Syntax

[Flags]
public enum OpcAccessLevel

<Flags>
Public Enum OpcAccessLevel

Inheritance

Object → ValueType → Enum → OpcAccessLevel

Fields

Name	Value	Description
CurrentRead	1	The current data of the Value attribute is readable.
CurrentReadOrWrite	CurrentRead | CurrentWrite	The current data of the Value attribute can be read or written.
CurrentWrite	2	The current data of the Value attribute can be written.
HistoryRead	4	The Value attribute provides readable historic data.
HistoryReadOrWrite	HistoryRead | HistoryWrite	The historic data of the Value attribute is readable or can be written.
HistoryWrite	8	The historic data of the Value attribute can be written.
None	0	The Value attribute cannot accessed and has no event history.
SemanticChange	16	Changes of the Value attribute generate semantic change events.
StatusWritesince v2.8	32	The status information associated with the data of the Value attribute is writable (see Status).
TimestampWritesince v2.8	64	The current SourceTimestamp of the data of the Value attribute is writable.

Applies to

Package	Versions
Opc.UaFx.Advanced	v2.5–v2.59