Unified Architecture

Access data on OPC UA servers

Functions

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opcuaserverinfo (opcua)Query host for installed OPC UA servers
opcua (opcua)Create OPC UA client object
connect (opcua)Connect OPC UA client to server
disconnect (opcua)Disconnect OPC UA client from its 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
opcuanode (opcua)Create OPC UA node objects
getNamespace (opcua)Namespace of server associated with client
browseNamespace (opcua)Graphically browse name space and select nodes from server
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 an OPC UA server at specific times
readProcessed (opcua)Read aggregate data from nodes of an OPC UA server
findNodeByName (opcua)Find nodes by name
findNodeById (opcua)Find 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 server node attributes
getAllChildren (opcua)Recursively retrieve all children of 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 Server Data Types

Descriptions of OPC UA data values.

OPC UA Aggregate Functions

OPC UA node aggregate function ID enumeration.

Access Data from OPC UA Servers

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

Featured Examples

Browse OPC UA Server Namespace

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.

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Read and Write Current OPC UA Server Data

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.

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Read Historical OPC UA Server Data

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.

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Visualize and Preprocess OPC UA Data

Visualize and Preprocess OPC UA Data

Work with OPC UA Data objects.

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OPC Toolbox Documentation
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