6 Systems concepts ToC Previous Next

6.3 OPC UA Servers ToC Previous Next

6.3.5 Subscription entities ToC Previous Next

6.3.5.1 MonitoredItems ToC

MonitoredItems are entities in the Server created by the Client that monitor AddressSpace Nodes and their real-world counterparts. When they detect a data change or an event/alarm occurrence, they generate a Notification that is transferred to the Client by a Subscription.

6.3.5.2 Subscriptions ToC

A Subscription is an endpoint in the Server that publishes Notifications to Clients. Clients control the rate at which publishing occurs by sending Publish Messages.

Previous Next