| Class | Description |
|---|---|
| OPCClient |
Manages a connection to an OPC DA service and fetches values from a connected server.
|
| OPCDriver |
Defines an interactive test harness for the OPCClient class.
|
| OPCItem |
Contains one data item read from the OPC DA server; the actual value plus metadata.
|
| Enum | Description |
|---|---|
| Quality |
Contains the three basic OPC data quality indicators, derived from the upper two bits of the least
significant byte of the quality code.
|
| ScalarType |
Gives the non-array data types returnable by an OPC service.
|
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