Issues

• Feature request: don't close the TCP connection on a timeout of a single device ID behind a gateway

  ioBroker/ioBroker.modbus#832 · Filter by author kenzo398 opened on Oct 28, 2026
  1

• Adapter stops pulling after "Error in handler for FC3"

  ioBroker/ioBroker.modbus#831 · Filter by author fefaul opened on Oct 27, 2026
  3

• Please consider fixing issues detected by repository checker

  ioBroker/ioBroker.modbus#825 · Filter by author ioBroker-Bot opened on Oct 4, 2026
  3

• Proxy mode does not preserve Modbus Unit ID with multiple Device IDs

  fixed
  ioBroker/ioBroker.modbus#813 · Filter by author AlexanderSch90 opened on Aug 31, 2026

• Foxesss H3-Smart: SoC registers can no longer be written to

  question
  ioBroker/ioBroker.modbus#811 · Filter by author Klaus-Lucas opened on Aug 20, 2026
  3

• Copy Data from Master to Slave or Proxy Function

  enhancementfixed
  ioBroker/ioBroker.modbus#775 · Filter by author helge-dot opened on Apr 18, 2026
  1

• Cyclic Write (CW) does not work without Poll enabled — registers silently excluded

  fixed
  ioBroker/ioBroker.modbus#771 · Filter by author mtibke opened on Apr 8, 2026
  2

• input register 10120 not addressable / readeable

  ioBroker/ioBroker.modbus#732 · Filter by author Martel85 opened on Dec 21, 2025
  2

• Marstek Venus E Batterie incompatible with modBus adapter

  fixedquestion
  ioBroker/ioBroker.modbus#656 · Filter by author bas-eng opened on Jun 21, 2025
  3

• write multiple registers timeout when writing registers in more than one device

  ioBroker/ioBroker.modbus#655 · Filter by author Alpini1980 opened on Jun 19, 2025

• Read Coil is causing adapter to disconnect from device

  ioBroker/ioBroker.modbus#626 · Filter by author turpler opened on Feb 4, 2025
  1

• Error in Handler

  ioBroker/ioBroker.modbus#615 · Filter by author mpl1337 opened on Jan 5, 2025
  4

• Possibility to define intervals per address

  enhancementfixed
  ioBroker/ioBroker.modbus#605 · Filter by author schadis opened on Dec 26, 2024
  1

• Several times a day "Socket Error", "Client in error state." and "Request timed out."

  ioBroker/ioBroker.modbus#595 · Filter by author exaware opened on Nov 28, 2024
  19

• Problem reconnecting after loss of communication

  fixed
  ioBroker/ioBroker.modbus#594 · Filter by author MaaG-dA opened on Nov 23, 2024
  1

• Reading of holding registers fails if the device has a "gap" in existing register numbers

  ioBroker/ioBroker.modbus#581 · Filter by author treblada opened on Oct 30, 2024
  1

• Polltime depending on the time of day

  enhancement
  ioBroker/ioBroker.modbus#576 · Filter by author PV-Georg opened on Oct 27, 2024

• Request: select serial port also by "/dev/serial/by-id" because of multiple USB serial adapters

  ioBroker/ioBroker.modbus#556 · Filter by author harvey637 opened on Sep 7, 2024
  1

• Reading raw data longer than 16 Bytes

  ioBroker/ioBroker.modbus#538 · Filter by author FKuypers opened on Jul 7, 2024

• Disable Logging for the adapter

  enhancementfixed
  ioBroker/ioBroker.modbus#525 · Filter by author fortschritt311 opened on Jun 13, 2024

• Implement Float (Little Endian Byte Swap)

  fixed
  ioBroker/ioBroker.modbus#508 · Filter by author dieterlind opened on May 6, 2024
  6

• Can not set value: The value of "offset" is out of range. It must be >= 0 and <= 2. Received 96

  fixedquestion
  ioBroker/ioBroker.modbus#502 · Filter by author miltonkeans opened on Apr 18, 2024
  11

• no function of modbus1 in iobroker after update

  question
  ioBroker/ioBroker.modbus#459 · Filter by author LCNJoe opened on Feb 4, 2024
  8

• Probleme EW11 und IOBroker

  ioBroker/ioBroker.modbus#444 · Filter by author Sefina-DS opened on Jan 7, 2024
  3

• Smarfox Energy Controler read / write problem

  ioBroker/ioBroker.modbus#433 · Filter by author leonundjulie opened on Dec 28, 2023