TCP/IP barcode scanner

Juraj · October 14, 2021, 5:33am

it uses Modbus TCP. that is simple to read but you need the documentation for the Modbus addresses

here I have an Arduino project which uses Modbus TCP with Ethernet library.

jandrassy/lab/blob/master/IsgModbusTcpSG/IsgModbusTcpSG.ino

/*
  This Arduino sketch is for DIY "SG Ready" adapter for Stiebel Eltron ISGweb.
  The ISGweb device is Internet Service Gateway for Stiebel Eltron heat pumps.
  The ISGweb doesn't have physical SG Ready input pins, but SG Ready inputs
  can be be controlled over Modbus TCP.

  This sketch reads a state of digital input input pin of Arduino and sets
  the state over Modbus TCP to SG Ready INPUT1 register of ISGweb.

  Network shield, module or on board TCP/IP networking capability is required.
  Ethernet library for Wiznet W5x00 chips or UIPEthernet library for enc28j60.
  It is easy to adapt the sketch for one of WiFi libraries for Arduino.

  To access the adapter over network point telnet client to the IP of the adapter
  and port 2323.

  Copyright 2020 Juraj Andrassy https://github.com/jandrassy

  This sketch is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public

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TCP/IP barcode scanner

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