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Eng

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Posts posted by Eng

  1. I am unfamilliar with the program you mention, but byasking for an ML you are asking for a 32 bit memory read. Is your master asking for/expecting a 32 bit response? Also the location for ML0 in an enhanced vision product is hexadecimal location 7000 or decimal location 28672. If you go into Visilogic and in the in program help files search for Modbus you will get a section for slave addressing to come up. All of the information you need is right there.

    Hi, thanks for reply.

    ClearScada is a Scada software we use to log the data from the PLC. We are working on a project to automatic report variables from a cleaning process as a PDF document.

    The PLC has already been programmed by someone else, and all we got to work from is the adress list, and the logic (in visi-logic).

    We have some important data in the ML registers that we need to read, but can't find the right registers to read from.

    I have read about the enhanced vision and about the hexadecimal location, but can't get it right.

    Our Scada software demands modbus adress, type of signal (DI, AI .etc) and data type (16-bit int signed, 16 bit int unsigned, 32 bit unsigned/signed and 32-bit float).

    I have tried setting up Scada to expect 32-bit unsigned or 32-bit signed, and tried different adresses I found on the web.

    Our main problem is our Scadasoftware won't take hex-adress, only dec. And when we try the decimal version (28672), it complain about out of bounds. Need to be between 0-9999 or 4-49999 etc.

    I'm kind of new to Modbus, but when we read MI (40000-44096) and MB(0-9999) using decimal adress it works fine.

    Thank you

  2. Hello.

    We are trying to read ML registers on our Vision 1040 PLC.

    We are using ClearSCADA as our software to read the ML register and Modbus. There are data on the ML0-ML20 that we are trying to get,

    but we can't seem to find the right address.

    We've tried 45101, 45100 and 45102 for reading ML0.

    We have googled and found nothing that works for us.

    Is there anyone here who have any tips on what adress ML0 is on and how to read it?

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