removenode

R2026b

Remove nodes from client subscription

Since R2023b

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    Syntax

    removenode(subscrObj,nodeList)

    Description

    removenode(subscrObj,nodeList) removes the specified nodes from the subscription of the OPC UA client.

    example

    Examples

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    Create a subscription for an OPC UA client with several nodes, then remove some nodes from the subscription.

    uaClient = opcua("localhost", 51210);
connect(uaClient);
firstNodes = browseNamespace(uaClient);    % Manually select nodes for subscription.
subscrObj = subscribe(uaClient,firstNodes,@mycallback,PublishInterval=3);
    ⋮
nodesToRemove = browseNamespace(uaClient); % Manually select nodes for removal.
removenode(subscrObj,nodesToRemove);

    Other possible forms of removenode might look like these:

    removenode(subscrObj, ["Sawtooth","Square"]); % Array of node names
removenode(subscrObj, nodeList);   % Array of Node objects
removenode(subscrObj, [2 3 4 7]);  % Array of node index IDs
removeNode(subscrObj, "2:10225");  % Namespace:Identifier

    The namespace index and identifier are available in the Node properties.

    Input Arguments

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    Subscription, specified as an opc.ua.Subscription object. You create this object with the subscribe function.

    List of nodes to remove from client subscription, specified as an array of node objects, names, index IDs, or namespace identifiers. For more information, see opcuanode.

    Example: nodeList = browseNamespace(uaClient)

    Data Types: integer | char | string | object

    Version History

    Introduced in R2023b

    See Also

    Functions