class DH_Item { canonical_type; // number: The canonical VARIANT type conf; // number: confidence (0-100) domain; // string: The domain name flags; // number: flags describing the point n_aliases; // number of aliases for this point n_attributes; // number of attributes this point has n_pending; // number of clients with a change pending n_properties; // number of properties this point has n_registered; // number of clients registered for changes n_subassemblies; // number of subassemblies this point has name; // string: name of the point, without the domain opcaccessrights; // number: read/write flags propid; // number: property id if applicable quality; // number: OPC item quality security; // number: security level (not used) timestamp; // number: time stamp in Windows epoch time value; // variant: the point value }
This instance variable may be a combination of zero or more of the following flags.
Hex | Constant | Description |
---|---|---|
0x00001 | READABLE | Item is readable. |
0x00002 | WRITABLE | Item is writable. |
0x00004 | LOCKED | Item is locked (not used). |
0x00008 | PROPERTY | Item is a property of another point. |
0x00010 | SUBASSEMBLY | Item is a subassembly of another point. |
0x00020 | ASSEMBLY | Item is an assembly. |
0x00040 | ATTRIBUTE | Item is an attribute of another point. |
0x00080 | TYPE | Item is an attribute type. |
0x00100 | ACTIVE | Item is active. |
0x00200 | PRIVATE_ATTRIBUTE | Item is a private attribute of a type. |
0x00800 | HIDDEN | Item is hidden. |
0x01000 | AUTO_ID | Item was assigned a propid automatically. |
0x40000 | TEMP_VALUE | Item's value is temporary, probably Not Connected assigned by an interface becoming disconnected. |
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