• Recent
    • Tags
    • Popular
    • Register
    • Login

    Please Note This forum exists for community support for the Mango product family and the Radix IoT Platform. Although Radix IoT employees participate in this forum from time to time, there is no guarantee of a response to anything posted here, nor can Radix IoT, LLC guarantee the accuracy of any information expressed or conveyed. Specific project questions from customers with active support contracts are asked to send requests to support@radixiot.com.

    Radix IoT Website Mango 3 Documentation Website Mango 4 Documentation Website Mango 5 Documentation Website

    Repetitively Prompt Modbus Exception Error But ModScan show no error !

    User help
    4
    8
    1.6k
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • D
      douglas choo
      last edited by

      0_1593251140945_52ca40bd-bc7e-4756-9fd6-815a92e20dcb-image.png
      0_1593250888266_46483e7b-5b40-4321-83d0-9eee572e805c-image.png
      0_1593250914772_7bd491d9-89ff-45de-bf7b-8e33bc0cf6da-image.png
      0_1593250956252_2e172881-1932-4936-933c-5429aad0c154-image.png
      0_1593251209293_6703fd15-3413-4c62-b47f-d7fef91cf907-image.png
      0_1593251317238_a9dedaab-d71b-4aa3-8063-c061f80e03ad-image.png

      https://drive.google.com/drive/folders/1_yhoEaz4gYbInw5PlDXjrHBAUteMMsRB?usp=sharing

      0_1593251555040_b7805c70-698a-4670-80bc-7659fe6adcd7-image.png
      0_1593251604190_78a74ea4-c305-476c-91ea-4e091b680e8c-image.png

      Dear experts, I am having the repetitively Modbus exception error prompt in current alarms view. I simplify the test by just read a stream of holding registers from address 721 to 845 (every single poll where I have set the max read register count 125). However I use the ModScan (popular software tool to diagnose modbus network) install in same computer as Mango installed using the same com port (com 1) and network, the tool prompt no error (as you can see in screen capture the number of poll and response don't miss). I have try the Echo check and uncheck in Mango Data Sources configuration but is still the same.
      I have tried to check any similar post in this forum, the latest I can find is 4 months ago which not really a similar case to my.
      I have put the logs in google share drive and attached all I can provide here.
      Urgent to seek advise from experts.
      Thanks,

      D 1 Reply Last reply Reply Quote 0
      • D
        douglas choo @douglas choo
        last edited by

        0_1593397164646_1bf82c1c-1a7f-495a-94cd-b81600ed4a5f-image.png
        0_1593397352035_0a7a9ccb-bc1f-4d3a-81f1-db48b247945f-image.png
        0_1593397373021_ce39f236-34cb-4f33-9e03-3871c4eb9398-image.png
        0_1593397395180_d837301b-712a-4abd-b847-92e296d6ef3a-image.png
        0_1593397426006_7bbc92db-8b7c-4d4c-885d-929428ae3657-image.png
        0_1593397472563_baf2c7c9-8a40-4d64-b754-f753833f2863-image.png
        0_1593398400984_c2bf19ae-b31a-489a-ba2c-79b6d4ae0e00-image.png

        To clear my doubt, I make another trace using different diagnosis software. This time I use the ASE2000 to simulate the Modbus RTU Master. A software very popular use in Utilities market.

        I put additional logs in same share drive, which provide the raw (hex exchange between master and slave), the interpreted and both. I also check the CRC, it seen normal in all exchanges.

        Hope IAS can spend valuable time to look into it.

        1 Reply Last reply Reply Quote 0
        • MattFoxM
          MattFox
          last edited by

          Your screenshots show your modbus as disabled.
          0_1593402051451_d164d88a-a465-415f-9a62-86f2ad6489c4-image.png
          Your datapoints will be Disabled if the DataSource is not Enabled/turned on.

          Do not follow where the path may lead; go instead where there is no path.
          And leave a trail - Muriel Strode

          D 1 Reply Last reply Reply Quote 0
          • D
            douglas choo @MattFox
            last edited by

            @mattfox The COM port cannot poll at same time between Mango and diagnosis software. The log in Mango was taken during the DataSource is enabled.
            Thanks

            1 Reply Last reply Reply Quote 0
            • MattFoxM
              MattFox
              last edited by

              Thanks for confirming!

              Do not follow where the path may lead; go instead where there is no path.
              And leave a trail - Muriel Strode

              1 Reply Last reply Reply Quote 0
              • R
                Ralf
                last edited by Ralf

                But you get the values? If you increase your timeout to 5-10 seconds, it's the same?

                Usually I deactivate the events and do it with watchdogs -> create slave monitor points.

                1 Reply Last reply Reply Quote 0
                • CraigWebC
                  CraigWeb
                  last edited by

                  Hi Douglas

                  Please always provide a mango ma.log file when dealing with errors. you can upload it to the drive.

                  D 1 Reply Last reply Reply Quote 0
                  • D
                    douglas choo @CraigWeb
                    last edited by

                    @craigweb , Yes you can download at below link

                    14th till 22nd July
                    https://drive.google.com/drive/folders/1KJS5kqzEbgDO821ntIgQRzisHZD7CweO?usp=sharing

                    1 Reply Last reply Reply Quote 0
                    • First post
                      Last post