Unified Architecture

Access data on OPC UA servers

Industrial Communication Toolbox™ provides an OPC UA client to connect to OPC UA servers. Using the client, you connect to the server, query server status, browse the server namespace, read and write current values, and read historical values from nodes on the server. Historical data is retrieved as OPC data objects, which allow you to process historical data in preparation for common analysis tasks.

Functions

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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
Learn about the OPC UA standard platform.
OPC UA Components
Learn about 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
Learn about types of OPC UA data values.
OPC UA Aggregate Functions
Retrieve OPC UA historical data as an aggregate of a function.
Access Data from OPC UA Servers
Create an OPC UA application by retrieving current and historical data.