How does one use the Aedes MQTT broker node with the MQTT-out node? I have googled and found a few pages which basically show the Aedes node just standing alone or linked to a Debug node. Have done this, but my measurement points are not being uploaded.

[image] jktan: I am still working on the TDC-E flow What is this? I have no idea what this means [image] jktan: However, a check on the online platform shows that the measurement points have not been uploaded Aedes is a local broker. Why do you think it would send to some online platf…

TDC-E is a telematic data collector from SICK, Germany. It came with its own Node-RED flow. Ah... so Aedes cannot send data online? Only within a machine? The message: "no response from server" is probably coming from the another flow. I have multiple flows. Once I chose "current flow", the import…

OK, lest start basic. Where are you attempting to send data. Online? What type of connection does this online service expect - MQTT? What is the addres/name of this online system where you are trying to send data?

Where are you attempting to send data. Online? Yes What type of connection does this online service expect - MQTT? Yes What is the addres/name of this online system where you are trying to send data? DECADA. It's a GovTech portal in Singapore. The underlying OS is EnOS from Envision.

ok, so you probably dont need a local MQTT broker. Very quickly, in basic terms, MQTT is a publish subscribe protocol with a single middle man - the broker. There should be only one broker. All clients (node-red, MQTT explorer, other apps) all subscribe and publish to this ONE broker. That way, …

[image] jktan: I noticed that the MQTT-in and MQTT-out actually share the same server ( That is correct. [image] jktan: But the data is not uploading. Does the MQTT in and out nodes show a green dot under them? Are you setting the topic of your MQTT publish nodes? I imagine this bro…

Yes, the MQTT-out node has a green dot below. Yes, have set the topic of the MQTT node as per the Message Integration information in the system. Have not tried MQTT Explorer before. Just remembered that there is an error message, "Error: connect ECONREFUSED 127.0.0.1:102". But we couldn't quite b…

[image] jktan: Error: connect ECONREFUSED 127.0.0.1:102 [image] jktan: What connection could have been refused? The localhost? 127.0.0.1 is local host yes. Port 102 is typically TSAP ( ref ) Where do you see this error? Can you show me?

How to use the Aedes MQTT broker?

General

jktan 9 July 2021 07:40 12

Yes, I have the hostname, user name, password etc for this online DECADA MQTT service. And quite certain that they are correct.

I noticed that the MQTT-in and MQTT-out actually share the same server (with the same hostname, username, password, etc.) The node name actually changes to MQTT-broker node when I edit the details of the server.

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How to use the Aedes MQTT broker?

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