Slow Modbus Test

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  • #2834
    Bernat
    Participant

    Hi RapidScada free support,
    I’m trying to communicate my computer with RapidScada with an Industrial Shields PLC (Arduino based). Industrial Shields equipment is using this Modbus library. https://github.com/luizcantoni/mudbus
    I can communicate properly both ways, but when I send a command modbus TCP/IP with the simulator from the PC to the PLC I have a slow response, the value on the PLC neds 3-5 s to update. I’ve checked and the PLC is not the slow part. Is this normal? Is it because I’m using the simulator? How can I fix it?

    Thank you for your support,
    Bernat

    #2835
    Mikhail
    Moderator

    Hi,

    Is it possible to provide a log of communication where we can see what packets were sent and received and timings?
    Do you send commands by Rapid SCADA?

    #2866
    Bernat
    Participant

    Hi Mikhail,
    Thanks,
    I guess that you asking for that:
    https://imgur.com/MsYQef7
    Also I cannot open the Scheme Editor properly as I saw it on your Youtube video example. Is this the free Scheme Editor? How can I used as on the video? Looks more graphical and intuitive. I tried to reinstalled without success.
    https://imgur.com/a/A6sLI

    • This reply was modified 6 years, 4 months ago by Bernat.
    • This reply was modified 6 years, 4 months ago by Bernat.
    #2876
    Mikhail
    Moderator

    Hi,

    Polling is slow, because the device doesn’t respond for “State” requests. Deactivate such requests in the template editor (keep “Temperature” active only) and compare the speed.

    Scheme Editor were changed. There is the old version in the video. Please create a new topic if it doesn’t work. editor.html must be open in a web browser not Word.

    #2882
    Bernat
    Participant

    Hi,
    Thanks,
    I will create a new topic.

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