DALimitChoice Enumeration

The Limit bit field of OPC quality.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<CLSCompliantAttribute(True)>
<ComVisibleAttribute(True)>
<DisplayName2Attribute("OPC-DA Limit Choice")>
<GuidAttribute("15B0FF4A-D144-4F57-96E8-E43384FB81AE")>
Public Enum DALimitChoice 
   Inherits System.Enum
   Implements System.IComparable, System.IConvertible, System.IFormattable

'Usage
 
Dim instance As DALimitChoice

[CLSCompliant(true)]
[ComVisible(true)]
[DisplayName2("OPC-DA Limit Choice")]
[Guid("15B0FF4A-D144-4F57-96E8-E43384FB81AE")]
public enum DALimitChoice : System.Enum, System.IComparable, System.IConvertible, System.IFormattable

[CLSCompliant(true)]
[ComVisible(true)]
[DisplayName2("OPC-DA Limit Choice")]
[Guid("15B0FF4A-D144-4F57-96E8-E43384FB81AE")]
public enum class DALimitChoice : public System.Enum, System.IComparable, System.IConvertible, System.IFormattable

Members

Member	Value	Description
LimitConst	3	Constant. The value is a constant and cannot move.
LimitHigh	2	High Limited. The value has ‘pegged’ at some high limit.
LimitLow	1	Low Limited. The value has ‘pegged’ at some lower limit.
LimitOk	0	Not Limited. The value is free to move up or down.

Remarks

The Limit Field is valid regardless of the QualityChoice and Substatus. In some cases such as Sensor Failure it can provide useful diagnostic information.

Server which do not support Limit return 0 (LimitOk).

Inheritance Hierarchy

System.Object
   System.ValueType
      System.Enum
         OpcLabs.EasyOpc.DataAccess.DALimitChoice

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2012, Windows Server 2016; .NET Core, .NET 5, .NET 6: Linux, macOS, Microsoft Windows

Reference

OpcLabs.EasyOpc.DataAccess Namespace