I have multiple OPCUA tags emitting data. I want each of the tag to go through a series of steps (eg: add some property to the tag's payload, aggregate the data over 1 minute and finally write it to MongoDB using MongoDB out node). I have been able to do this successfully for one Tag. How do I do it…

Are the values for the individual topics arriving in separate messages? If so then can you not just feed each one through the flow to take whatever action is necessary? If there are all in one message then can you show us the format of the data in a debug node so we can better understand. [ima…

If you're simply trying to collect a certain number of messages before processing, use the join node to gather them into an array of whatever length you want and then it will emit them for processing. Or, so the processing for each message as they arrive and then collect them for db insertion. OR, j…

There are multiple tags, each having their own topic. So I cannot use DataHub connector in my flow, as it allows only one topic. Colin, if I understand it right, you are saying, I cannot use any flow node, to receive data from multiple topics as an array of messages? Now about, MQTT. I have a SSL i…

[image] Pari: There are multiple tags, each having their own topic. So I cannot use DataHub connector in my flow, Sorry, I dont know what you mean by tags or DataHub [image] Pari: receive data from multiple topics as an array of messages? That is also unclear. Do you mean multiple me…

Apologies, I must clarify that I am using Litmus IOT that provides Node Red to create flows within IOT edge devices. So the SSL and MQTT in my question comes from Litmus. I don't know if this is information is useful at all for Nodered forum to answer without knowing Litmus. To generalize my questi…

[image] Pari: Is it possible to dynamically pass a tag topic to a Flow You keep using the word tag, but that does not have any meaning in node red. What do you mean by a tag? Do you mean a message? But the answer is yes, you can pass anything anything you like into a flow in a message. Messa…

Tag referred in my replies are OPCUA tags that produce boiler status information. An example message from one of the “tag” looks like this. {"success":true,"datatype":"uint32","timestamp":1669011740925,"registerId":"3E44F469-207E-47DB-81CC-DBEBE4E0D6C9","value":829514,"deviceID":"5C406E38-BE06-49B8…

OK, now we have some clarity. When you talk about tags you mean messages containing data for a tag, where the tag id is in msg.payload.tagName. [image] Pari: there must be a way to pass the tag’s topic to the flow dynamically. Do you mean you want to dynamically configure an MQTT In node to…

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How to iterate over multiple tag topics?

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system Closed 20 January 2023 14:16 10

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How to iterate over multiple tag topics?

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