Parameters
- serverDescriptor
- The OPC server involved in the operation.
- subscriptionParameters
- Subscription parameters to be used when the subscription is created
- refreshWhenActive
- When set, the subscription will automatically perform a Refresh after each successful connection to the server (either the initial connection, or any automatic reconnection after the connection is lost).
- state
- The state object (can be any value supplied by your code); available in event notifications.
Return Value
Returns an observable for notifications about given OPC events.