removenode
Description
Examples
Remove Nodes from OPC UA Client Subscription
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
subscrObj
— Subscription object
opc.ua.Subscription
object
Subscription, specified as an opc.ua.Subscription
object. You
create this object with the subscribe
function.
nodeList
— List of removed nodes
opc.ua.Node
object | string | char | integer
List of nodes to remove from client subscription, specified as an array of node objects, names, index IDs, or namespace identifiers. For information on node object functions and properties, see OPC UA Node.
Example: nodeList = browseNamespace(uaClient)
Data Types: integer
| char
| string
| object
Version History
Introduced in R2023b
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