Modbus TCP/IP wrong registers reading issue

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  • May 26, 2025 at 10:24 am #16417
    saskrabic
    Participant

    I am using Modbus TCP to communicate with KoyoClick PLC with RapidScada version 5.0.6.0. Everything works fine about 95% of the time. Statistically, ones a month communication starts to behave strange. It begins to display values from some other registers. For example- In RapidScada, on tags that should be read from registers 40061->40090 are values from registers 40101->40130. When it happens, problem is solved by doing “Restart scada communicator service”.
    In a last few days it started to happen more often (3 times in a week).
    Does anyone had this experience?
    Best regards!

    • This topic was modified 1 month, 2 weeks ago by saskrabic.
    May 26, 2025 at 11:10 am #16420
    Mikhail
    Moderator

    Hi,
    It seems like this issue appeared many years ago and was fixed. I suggest to upgrade Rapid SCADA to version 6.

    June 5, 2025 at 6:30 am #16446
    saskrabic
    Participant

    Hi,
    Thank you! I will try new version.

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