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    Modbus RTU - NeuronL503 - Mervis

    Mervis
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    • O
      OlivierP last edited by OlivierP

      Hi all,

      I'm used to working with Codesys and I can't find my way fully around Mervis yet :)

      So I am trying to read out some PPM CO2 readings from a Modbus RTU transmitter

      • Datasheet: http://downloads.epluse.com/fileadmin/data/product/ee870/BA_EE870_e.pdf

      • I'm trying to read out the CO2 fast parameter: Address: 29 + 30

      It seems I can read out some values, but I have to combine them into a REAL, in Codesys I use UNION to combine both words (and swap them) into a REAL.

      What is the easiest way to achieve this within Mervis?

      co2group.JPG co2.JPG VariableMonit.JPG

      Thank you.

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      • Martin Kudláček
        Martin Kudláček last edited by

        Hi @OlivierP ,
        you can change the byte order via MultiByte Order:

        94a4f3dc-a93d-4a45-ba05-cc45f7c01481-image.png

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