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Siemens SINUMERIK 840D CNC

Code 120400: The settings for the acyclic links with the drive units are not yet effective.%nSwitch off/on HMI !

Problembeschreibung & Sicherheitswarnung

Die Siemens SINUMERIK 840D CNC hat einen kritischen The settings for the acyclic links with the drive units are not yet effective.%nSwitch off/on HMI !-Alarm ausgelöst. Sofortige Aufmerksamkeit durch einen qualifizierten Bediener oder Wartungstechniker ist erforderlich, um Folgeschäden an der Ausrüstung oder verdorbene Teile während des Fertigungszyklus zu vermeiden. Stellen Sie immer sicher, dass standardmäßige Sicherheits- und LOTO-Verfahren befolgt werden, bevor Sie auf Schaltschränke zugreifen.

Offizielle Schritte zur Fehlerbehebung

Definitions: A file transfer from/to a drive unit has failed as the settings for acyclic links wi th the drive units become effective only after an HMI reboot. Reaction: Alarm display. Remedy: Switch off/on HMI and then repeat the process leading to the alarm. Program Continuation: Internal

Source: SINUMERIK 840D sl / 840Di sl / SINAMICS S120 Diagnostics Manual (DAsl, 03/2009)

Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.

Über Siemens SINUMERIK 840D CNC Alarme

Industriesteuerungen von Siemens verfügen über umfangreiche Diagnosesysteme zum Schutz der internen Schaltkreise und mechanischen Verbindungen. Wenn eine SINUMERIK 840D CNC einen Fehlercode wie 120400 ausgibt, deutet dies typischerweise auf eine Diskrepanz zwischen befohlenen Werten und tatsächlichem Sensor-Feedback hin.

Vollständige Alarmliste: 4014 Siemens SINUMERIK 840D CNC codes.

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Verwandte Siemens SINUMERIK 840D CNC Codes

Code 120306
The selection is not possible. The file %1 is selected and active in channel %2.
Code 120307
File %1 cannot be opened for the editor because it is selected in channel %2 for execution by external sources.
Code 120308
In the event of an emergency stop, the program %1 can only be changed in the machine/program correction area.
Code 120309
The selection is not pos sible. Please close the simulation and repeat the selection.
Code 120310
The selection is not possible. Please wait for the pending action or terminate it, then repeat the selection.
Code 120401
SINAMICS: Write job for paramete r %1, value %2, area %3: %4s timeout!
Code 120402
Bus%1.Slave%2: %3: First commi ssioning of SINAMICS required!
Code 120403
Bus%1.Slave%2: %3: Check/acknowledge topology!
Code 120404
Setting up acyclic link %1 failed.%nSwitch off/on control, drives and HMI.
Code 120405
SINAMICS: Firmware update for DRIVE-CLiQ components is running.%nPlease wait for the fi rmware update to be completed!