4diac & NodeRed example

[jycouet]

Would be great to have a demo somewhere with 4diac & NodeRed.

[jpchemla]

Great idea. I can try to make a simple example. Which communication could I try ? (OPC UA, http or Modbus)

[azoitl]

This would be amazing. I'm happy to support where I can. I know that both OPC UA and MQTT are working very well. I wouldn't recommend Mdobus or anything else. I personally would recommend OPC UA as in that case no broker is needed and setting up an MQTT is sometimes a bit challanging.

If you do that would the then have a NodeRed configuration folder/data as sub dir in the 4diac IDE project.

[jpchemla]

Hi, I made a simple example : A Start and Stop buttons and a Counter increasing every 5s between the Start and Stop signals. In Node-RED, I need two palettes : node-red-contrib-opcua and @Flowfuse/node-red-dashboard. The node-red (json) file and the 4DIAC program are in the files. The HMI will be accessible at http://localhost:1880/dashboard

flows.json

opcua4nodered.zip

[azoitl]

@jpchemla wow this is cool. Would you consider to put this into a PR that would have an Eclipse 4diac project and in one of the folders have the node red setup?

[jpchemla]

@azoitl, it's my firsts steps with a collaborative project using git. I made a Pull Request but I'm not sure it is visible. I can make other examples of dashboards using node-red with other protocols. I tried MQTT with a subscribe bloc with "raw[].mqtt[tcp://broker.emqx.io:1883,forte,4diac/test]" as id. I have Q0=False and status is "TERMINATED".

[azoitl]

@jpchemla thx a lot for your PR. I've seen it but didn't find time yet to comment. There are a few things that need to be improved but I'll comment at the PR.