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Código 20144: [Channel %1: ] Block %2 motion synchronous action: system variable access not possible

Descripción del problema y advertencia de seguridad

El Siemens SINUMERIK 840D CNC ha desencadenado una alarma crítica [Channel %1: ] Block %2 motion synchronous action: system variable access not possible. Se requiere la atención inmediata de un operador calificado o técnico de mantenimiento para evitar daños secundarios al equipo o piezas estropeadas durante el ciclo de fabricación. Asegúrese siempre de seguir los procedimientos de seguridad estándar y LOTO antes de acceder a los armarios eléctricos.

Pasos oficiales de solución de problemas

Parameters: %1 = Channel number %2 = Block number Definitions: When using system variables, it is assumed that a read/write operat ion can access the required data successfully. In accesses to encode r actual values or digital I/Os, the result depends on the availability of the corresponding hardware components. If an access within synchronized ac tions does not return a valid value, alarm 20144 is output. Outside synchr onized actions, such a read/write access causes block execution to be interrupted until the result is available. Block execution is subsequently continued. Reaction: NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Remedy: Before reading/writing system variables, ensure that it is possible to acce ss the required hardware components. Program Continuation: Clear alarm with the RESET key. Restart part program

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.

Acerca de las alarmas de Siemens SINUMERIK 840D CNC

Los controladores industriales construidos por Siemens están diseñados con amplios sistemas de diagnóstico para proteger los circuitos internos y los enlaces mecánicos. Cuando un SINUMERIK 840D CNC arroja un código de error como 20144, generalmente indica un desajuste entre los valores ordenados y la retroalimentación real del sensor.

Lista completa de alarmas: 4014 Siemens SINUMERIK 840D CNC códigos.

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