OPC UA

The OPC UA connector is a field connector for browsing, reading, writing, and monitoring nodes on external OPC UA servers. It also supports subscribing to OPC UA events and reading structured datatypes such as extension objects.

Connection settings

Setting	Description
Endpoint URL	OPC UA endpoint URL, for example opc.tcp://my-server:4840.
Encrypted	Enables secure OPC UA communication.
User Token Type	Authentication method. Supported values are Anonymous and Username.
Username	Username for username-based authentication.
Password	Password for username-based authentication.

Adding properties

Use the address space browser to select nodes from the OPC UA server.

For each selected node, Reniway stores:

• Name
• Node ID
• resolved property Type
• Direction

The connector also supports event-oriented properties through the event selection flow in the address space browser.

Runtime behavior

• Input properties monitor node changes and update in real time.
• Output properties can write values back to the selected OPC UA nodes.
• Event subscriptions can be created for nodes that support OPC UA events.
• Structured datatypes, including extension objects, can be read and handled through the connector.

Global settings

Global OPC UA client settings are documented here.

Notes

• Certificate-based user token authentication is not currently supported in the connection form.
• If server certificate trust is blocking a connection, check the global OPC UA connector settings.