Issues

• TCP: no 'close' event when an open connection drops with an error (e.g. ECONNRESET)

  yaacov/node-modbus-serial#635 · Filter by author maxballenger opened on Oct 21, 2026

• Exception 11 message says "retry request again later", the spec says the device is usually not there

  yaacov/node-modbus-serial#631 · Filter by author Harted opened on Sep 23, 2026

• Testing extended modbus with rs485 comms port

  help wantedquestion
  yaacov/node-modbus-serial#611 · Filter by author NGA-Caleb opened on Apr 8, 2026
  1

• Unstable connection with WinCC Unified at low polling rates (>1s)

  help wantedquestion
  yaacov/node-modbus-serial#601 · Filter by author agglazko opened on Feb 27, 2026
  1

• Modbus Exception 3

  yaacov/node-modbus-serial#599 · Filter by author HenriqueAurelio opened on Dec 30, 2025
  3

• error event is not triggering

  yaacov/node-modbus-serial#595 · Filter by author roddc opened on Oct 20, 2025
  1

• Upgrade serialport dependency to version 13

  yaacov/node-modbus-serial#592 · Filter by author mkrenzke opened on May 23, 2025

• 'close' event is not firing after v8.0.19

  yaacov/node-modbus-serial#591 · Filter by author canegru opened on May 12, 2025
  1

• no-serial-port actually requires serialport

  bug
  yaacov/node-modbus-serial#589 · Filter by author IlCallo opened on Apr 18, 2025
  12

• Close not calling the callback

  yaacov/node-modbus-serial#582 · Filter by author hcraT opened on Feb 25, 2025
  1

• Compilation error with typescript

  bug
  yaacov/node-modbus-serial#581 · Filter by author AuspeXeu opened on Feb 21, 2025
  2

• Unhandled exception when updating to version 8.0.18

  bug
  yaacov/node-modbus-serial#577 · Filter by author hcraT opened on Feb 18, 2025
  4

• Data length error

  yaacov/node-modbus-serial#573 · Filter by author harshit-malik7 opened on Jan 20, 2025
  2

• getMultipleHoldingRegisters() in Modbus-TCP Server causes a failure when returning a Promise

  yaacov/node-modbus-serial#572 · Filter by author romor opened on Jan 9, 2025
  2

• Can a Modbus TCP Slave actively send a frame to a Modbus TCP Master?

  yaacov/node-modbus-serial#571 · Filter by author Oniokey opened on Dec 14, 2024
  3

• Add support for MODBUS/TCP Security (aka Modbus/TCP TLS)

  yaacov/node-modbus-serial#570 · Filter by author AlexandreFournier opened on Nov 28, 2024

• TCPbufferdPort do not recive data if length exceeds 123 registers

  yaacov/node-modbus-serial#569 · Filter by author MarkusBeer opened on Nov 28, 2024

• ModbusRTU.writeRegisters doesn't accept negative int 16 ...

  yaacov/node-modbus-serial#568 · Filter by author volkmarnissen opened on Nov 16, 2024
  1

• Question .connectTelnet self.openFlag = false by time out event ??

  yaacov/node-modbus-serial#567 · Filter by author zungzeny808 opened on Nov 13, 2024

• 如何获取串口的通信日志？TX和RX

  yaacov/node-modbus-serial#566 · Filter by author yangyongbin89 opened on Nov 7, 2024
  1

• modbus - baudRate 115200 - does not work

  help wantedquestion
  yaacov/node-modbus-serial#561 · Filter by author robert-beecloud opened on Aug 12, 2024
  2

• Does the CRC check in the Modbus RTU code have any effect?

  yaacov/node-modbus-serial#560 · Filter by author covered0000 opened on Aug 12, 2024

• Modbus TCP connect Telnet CRC Error

  yaacov/node-modbus-serial#556 · Filter by author danhloimta opened on May 24, 2024

• 请问对于float,short,word等不同类型数据该如何读取

  yaacov/node-modbus-serial#555 · Filter by author FlowerSeaSea opened on May 17, 2024
  2

• ServerTCP getMultipleHoldingRegisters and getMultipleInputRegisters don't work with Promises

  yaacov/node-modbus-serial#554 · Filter by author ensehic opened on May 13, 2024
  1