dOPC Client Toolkit Help file
TdOPCItemData Class
dOPCIntf.TdOPCItemData
    dOPC.TdOPCItem
C++
public: class TdOPCItemData : public TCollectionItem;
C#
public class TdOPCItemData : TCollectionItem;
Visual Basic
Public Class TdOPCItemData
Inherits TCollectionItem

dOPCIntf

class to store informations about an OPC item 

TdOPCItemData stores information about an OPC DA item.

TdOPCItemData Properties 
Description 
AccessPath contains the complete path of the item (e.g. Branch1.Branch2.Item1). 
AccessRights contains the access rights of the item. 
CanonicalDatatype contains the native data type of the item. 
This is ChangeCount, a member of class TdOPCItemData. 
Data 
Data is not used by TdOPCItemData. 
 
EUInfo contains the Engineering Units information of the item. 
EUType contains the type of Engineering Units (EU) information of the item (if any) contained in the property EUInfo
IsActive contains the state of the data acquisition for this item. 
ItemID contains the unique identifier for the item. 
LastError contains the code for the last occurred OPC error. 
Quality contains the latest quality read from the server. 
RequestType contains the data type which the item's return value will have. 
 
ServerHandle contains the assigned server handle for the item. 
Tag 
Tag has no predefined meaning. 
TimeStamp contains the latest timestamp read from the server. 
Value contains the latest value read from the server. 
WantQuality contains the quality that should be written in the WriteAsync and WriteSync methods. 
WantTimeStamp contains the timestamp that should be written in the WriteAsync and WriteSync methods. 
WantValue contains the value that should be written in the WriteAsync and WriteSync methods. 
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