| Class | Description | |
|---|---|---|
 | DAAccessRight | Indicates if the item is read only, write only or read/write. |
| DABrowseParameters | Contains filtering conditions for OPC Data Access node browsing. |
| DAGroupParameters | Contains subscription parameters, such as the requested update rate. |
| DAItemDescriptor | Contains information necessary to identify an OPC item, such as its Item Id. |
| DANodeDescriptor | Contains information necessary to identify an OPC Data Access node, such as its Item Id. |
| DAPropertyDescriptor | Contains information necessary to identify an OPC property, such as its Property Id. |
| DAPropertyId | The identifying number assigned by the OPC server to the property. |
| DAQuality | Represents the quality state for an item's data value. |
| DAReadParameters | Contains parameters for OPC read operations, such as the data source or value age. |
| DAUtilities | Contains static members that facilitate work with types related to OPC Data Access. |
| DAVtq | Holds data value, timestamp and quality, abbreviated sometimes as VTQ. This is a common combination in OPC, e.g. returned when an OPC item is read. |
| EasyDAUriStrings | Contains URI strings used by OPC-DA client object. |
| IEasyDAClientExtension | Contains extension methods to the IEasyDAClient interface. |
OPC Studio User's Guide and Reference
OpcLabs.EasyOpc.DataAccess Namespace (OpcLabs.EasyOpcClassicCore)
