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  U

  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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  M

  I have Patron L207 and I'm trying to establish communication with following external Modbus RTU relay board

  I tried this:

  mbpoll /dev/extcomm/0/0 -m rtu -a 1 -b 9600 -c 8 -P none

  But I get

  Read output (holding) register failed: Connection timed out

  Any hints on wwhat I am doing wrong? I have no experience with RS485 so I am totally stuck.

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  A

  Hi @knebb,

  Thanks for this post, it's very helpful.

  Best regards,
  Antonin, Unipi