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I am using client.get_attributes() method for the bulk read of the nodes, in which the response containes value, sourcetimestamp, servertimestamp and status code. How can i get node id also in the response. about opcua-asyncio HOT 5 CLOSED

KuroAshi75 avatar KuroAshi75 commented on September 24, 2024
I am using client.get_attributes() method for the bulk read of the nodes, in which the response containes value, sourcetimestamp, servertimestamp and status code. How can i get node id also in the response.

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Comments (5)

schroeder- avatar schroeder- commented on September 24, 2024
nodes = [client.get_node('ns=4;i=4'), ...]
res = await client.read_attributes(nodes, ....)
for node, value in zip(nodes, res):
     ....

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KuroAshi75 avatar KuroAshi75 commented on September 24, 2024

Thank you for your quick response @schroeder-

So it is implied that order or the values in response is same as the order of nodeid's in 'nodes' ?
are we safe to assume that?

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schroeder- avatar schroeder- commented on September 24, 2024

Yes they are always in the same order.

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KuroAshi75 avatar KuroAshi75 commented on September 24, 2024

Hi Alex, just a small query, what is the limit to the count of nodes I can query at a time?

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schroeder- avatar schroeder- commented on September 24, 2024

There can be limits, see https://reference.opcfoundation.org/Core/Part5/v104/docs/6.3.11, but not all servers expose that value. I would make the max query value configurable and limit it to 10000 per request.

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