OPC UA Client

The OPC UA Client origin processes data from an OPC UA server. The OPC UA Client origin can poll the server at regular intervals, returning the latest data from all specified nodes. Or it can subscribe to specific nodes and receive messages from the server each time a change related to a specified node occurs. For information about supported versions, see Supported Systems and VersionsSupported Systems and Versions in the Data Collector documentation.

The origin can also browse all available nodes to provide the node details that you need to configure the origin.

When you configure the OPC UA Client origin, you specify connection information and optional security information, such as user name and password, TLS properties, client private key alias, and security policy. You can also use a connectionconnectionconnection to configure the origin.

You configure tag information, and you select the processing mode for the origin and specify the NodeIds for the nodes you want to use. You can use one of several different methods to provide the NodeIds.

You can also configure encoding limits, such as the maximum chunk or message size.

When a stops, the OPC UA Client origin notes where it stops reading. When the starts again, the origin continues processing from where it stopped by default. You can reset the originreset the originreset the origin to process all requested data.