ModBus, Node-Red and MQTT -Video 1

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  • Опубліковано 6 вер 2024

КОМЕНТАРІ • 13

  • @simonfunghk
    @simonfunghk Рік тому

    I have learned MQTT by Python for a few years ago from your website, which helps me fully understand how it works due to your extreme details description and explanation. Thank a lots your effort and I really appreciate your work in free.

  • @simonfunghk
    @simonfunghk Рік тому

    In this series of video, I can also learn more of MQTT in Node red and Modbus, which can help me current project in industrial environment. Thank a lots again.👏👍💪

  • @engrkhan8726
    @engrkhan8726 2 роки тому

    A vary helpful lectures I found here
    Thanks a lot

  • @ohsnapfit2096
    @ohsnapfit2096 Рік тому

    Awesome video, thank you so much!

  • @JLRocco43
    @JLRocco43 4 роки тому +1

    Hi Steve. Been using your videos to get through Node-Red. I really appreciate it. I've got a question when it comes to using the modbus contrib library though. How would you go about getting the payload of more than 10 addresses but the addresses are not in order? I understand that we can adjust the quantity based from the starting address. But, what I'm trying to do is use multiple Modbus-Read nodes with an address on each one (I did it this way because I need the Topic field on the Modbus-Read node). This would have worked but I'm experiencing a problem of getting the data once I've logged more than 10 addresses/Modbus-Read nodes. The reason I need the topic field is that it becomes my identifier once I pass it to a custom dashboard I've made. Thanks!

  • @bm830810
    @bm830810 4 роки тому

    sound volume is low, thanks for the content

  • @qzorn4440
    @qzorn4440 3 роки тому

    hi, i clicked on the plc simulator and got the 404 screen, not found? do you have any suggestions on down loading the modbus simulator? also can the software find the modbus addresses and test an old message display with a few led lights and pushbuttons? thanks a lot...:)

  • @jochenthomas7332
    @jochenthomas7332 Рік тому

    Hey Steve
    how do you know the IP adress of your local device? (maybe a beginner question ;))
    Thank you!

    • @stevecope
      @stevecope  Рік тому

      On windows at the command line type
      ipconfig
      on linux and macuse
      ifconfig
      see
      itssc.rpi.edu/hc/en-us/articles/360001995831-How-to-find-your-MAC-Address-for-MacOS-Linux-Windows

  • @scubeedu2
    @scubeedu2 Рік тому

    Just wondering if you have been successful using Node-Red in a docker container? I'm trying to access Modbus registers connected to an RS232 serial interface (that is working well) on a Raspberry Pi, but cannot seem to get it connected. Any experience?

    • @stevecope
      @stevecope  Рік тому

      Hi
      Not node red but came up with the problem on home assistant. I think using the --net=host switch will cure it and you don't need the port mapping.
      docs.docker.com/network/host/
      rgds
      steve