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    node red istance to be interfaced to Mervis PLC

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    • A
      arolli last edited by

      Hi all,
      I have a stable Mervis environment with Neuron + several extension. I want use a dedicated node red instance on dedicated HW and finding a way to interface it with Mevis. There is way to read and write Mervis Global Varialbles trough Modus TCP/IP?
      Thanks
      Antonio

      Martin Kudláček 1 Reply Last reply Reply Quote 0
      • Martin Kudláček
        Martin Kudláček @arolli last edited by

        Hi @arolli,
        this is theoretically possible, but the easiest solution is to spin a ModbusTCP server in the Mervis and communicate over this protocol. The BACnet/IP would be easier to interface from the Node-RED, but we don't have any Node-RED nodes tested for this. The node-red-contrib-modbus works OK.

        Best regards,
        Martin

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        • A
          arolli last edited by

          @Martin-Kudláček said in node red istance to be interfaced to Mervis PLC:

          face from the Node-RED, but we don't have any Node-RED nodes tested

          Thanks Martin,
          how to spin Modbus TCP on Mervis?
          Antonio

          Martin Kudláček 1 Reply Last reply Reply Quote 0
          • Martin Kudláček
            Martin Kudláček @arolli last edited by

            Hello @arolli,
            please follow this tutorial: https://kb.unipi.technology/en:sw:01-mervis:setting-modbus-server-hidden#setting_modbustcp_server_slave

            Martin

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            • A
              arolli last edited by

              Thanks Martin
              now it's clear and working.
              Antonio

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              • U
                udokra last edited by udokra

                Hallo
                Ich habe bei mir ein unipi 1.1 bekomme auch Information von mervis zurück ,jetzt meine Frage ,wieviel Modbus Knoten kann ich in node red einbringen.
                Ich habe 3 Stück, bei den die Verbindung unterbricht
                Was mache ich falsch

                Dankeschön für eure Antwort

                Udo

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                • U
                  udokra @udokra last edited by

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