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ERR_SOCKET_UNLISTEN

Socket error during Unlisten operation

Allen-Bradley · MicroLogix 1400 Programmable Controllers

Was bedeutet ERR_SOCKET_UNLISTEN ?

An error occurred during the socket unlisten operation. This indicates a failure to properly stop listening for incoming connections, which could leave resources held or in an unstable state.

Häufige Ursachen

  • System resource conflict preventing the release of the listen socket.
  • Internal operating system error during the unlisten process.
  • Modbus TCP port is still actively being accessed by other processes.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Restart the controller to force a clean shutdown and release of network services.

  2. 2

    Verify that no other processes are interfering with the Modbus TCP listener port.

Alle Codes in diesem Handbuch durchsuchen (60)
Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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Quelle: Allen-Bradley MicroLogix 1400 Programmable Controllers