Unified Architecture

Access data on OPC UA servers

Functions

Server Connection

`opcuaserverinfo (opcua)`	Query host for installed OPC UA servers
`opcua (opcua)`	Create OPC UA client object
`setSecurityModel (opcua)`	Set security configuration parameters for OPC UA client
`connect (opcua)`	Connect OPC UA client to server
`disconnect (opcua)`	Disconnect OPC UA client from server
`isConnected (opcua)`	Determine if OPC UA client object is connected to server
`getServerStatus (opcua)`	Status of OPC UA server
`findDescription (opcua)`	Find OPC UA servers containing specified description
`exportClientCertificate (opcua)`	Copy OPC UA client application certificates to file

Namespace Browsing

`opcuanode (opcua)`	Create OPC UA node objects
`getNamespace (opcua)`	Namespace of OPC UA server associated with client
`browseNamespace (opcua)`	Graphically browse name space and select nodes from OPC UA server

Read and Write

`readValue (opcua)`	Read values from nodes on OPC UA server
`writeValue (opcua)`	Write values to nodes on OPC UA server
`readHistory (opcua)`	Read historical data from nodes on OPC UA server
`readAtTime (opcua)`	Read historical data from nodes of OPC UA server at specific times
`readProcessed (opcua)`	Read aggregate data from nodes of an OPC UA server

Node Information

`findNodeByName (opcua)`	Find OPC UA server nodes by name
`findNodeById (opcua)`	Find OPC UA server nodes by namespace index and identifier
`isEmptyNode (opcua)`	True for empty nodes of OPC UA node array
`isVariableType (opcua)`	True for variable nodes of OPC UA server
`isObjectType (opcua)`	True for object nodes of OPC UA server
`getNodeAttributes (opcua)`	Read OPC UA server node attributes
`getAllChildren (opcua)`	Recursively retrieve all children of OPC UA server node

Topics

About OPC Unified Architecture

The OPC Unified Architecture (OPC UA) standard combines all the capabilities of OPC Data Access and OPC Historical Data Access standards (together, referred to as "OPC Classic") and adds various additional capabilities into a single, extensible standard.

OPC UA Components

Description of OPC UA components and their interactions.

OPC UA Security

Establish secure, authenticated connections between OPC UA servers and clients.

OPC UA Certificate Management

Manage keys for secure connections between OPC UA servers and clients.

OPC UA Server Data Types

Descriptions of OPC UA data values.

OPC UA Aggregate Functions

OPC UA节点聚合函数ID枚举。

从OPC UA服务器访问数据

Create an OPC UA application by retrieving current and historical data.

Featured Examples

Browse OPC UA Server Namespace

Find OPC Unified Architecture (UA) servers, connect to them, and browse their namespace to find nodes of interest. To run this example in your MATLAB session, you will need to install and start the Prosys OPC UA Simulation Server. Read the Getting Started section of the OPC Toolbox documentation for further information.

Open Script

Read and Write Current OPC UA Server Data

Read and write data to an OPC UA server. To run this example in your MATLAB session, you will need to install and start the Prosys OPC UA Simulation Server. Read the Getting Started section of the OPC Toolbox documentation for further information.

Open Script

Read Historical OPC UA Server Data

Read historical data from an OPC UA server. Specifically, this example reads data from a Prosys OPC UA Simulation Server v4.0.0 or later.

Open Script

Visualize and Preprocess OPC UA Data

Work with OPC UA Data objects.

Open Script

OPC Toolbox Documentation

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