OPC Studio User's Guide and Reference
DAItemMappingKind Enumeration



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.DataAccess.LiveMapping Namespace : DAItemMappingKind Enumeration
Specifies how the OPC Data Access item will be mapped.
Syntax
'Declaration
 
<ComVisibleAttribute(False)>
<DisplayName2Attribute("OPC-DA Item Mapping Kind")>
Public Enum DAItemMappingKind 
   Inherits System.Enum
   Implements System.IComparable, System.IConvertible, System.IFormattable 
'Usage
 
Dim instance As DAItemMappingKind
[ComVisible(false)]
[DisplayName2("OPC-DA Item Mapping Kind")]
public enum DAItemMappingKind : System.Enum, System.IComparable, System.IConvertible, System.IFormattable  
[ComVisible(false)]
[DisplayName2("OPC-DA Item Mapping Kind")]
public enum class DAItemMappingKind : public System.Enum, System.IComparable, System.IConvertible, System.IFormattable  
Members
MemberValueDescription
ErrorId1Map the error ID, as System.String.
ErrorMessage3Map the error message, as System.String. An empty string if the operation has been successful.
Exception2Map the exception, as Exception or a derived type. null if the operation has been successful.
Quality9Map the OPC quality, as OpcLabs.EasyOpc.DataAccess.DAQuality.

Remarks:

The linking target value is not changed if the operation resulted in an exception.

Result0Map the operation result, as OpcLabs.BaseLib.OperationModel.OperationResult or a derived type specific for the operation.
StatusInfo4Map the status information, as StatusInfo.
Timestamp7Map the timestamp, as System.DateTime. In UTC.

Remarks:

The linking target value is not changed if the operation resulted in an exception.

TimestampLocal8Map the timestamp, as System.DateTime. In local time.

Remarks:

The linking target value is not changed if the operation resulted in an exception.

Value6Map the item value, as System.Object or a specific type. This is the default mapping kind.

Remarks:

The linking target value is not changed if the operation resulted in an exception.

Vtq5Map the item value/timestamp/quality combination, as OpcLabs.EasyOpc.DataAccess.DAVtq or a generic DAVtq.

Remarks:

The linking target value is not changed if the operation resulted in an exception.

Inheritance Hierarchy

System.Object
   System.ValueType
      System.Enum
         OpcLabs.EasyOpc.DataAccess.LiveMapping.DAItemMappingKind

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also