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Código 4503: [TO unit %1: ] H number %2 assigned more than once. H number linked again.

Descripción del problema y advertencia de seguridad

El Siemens SINUMERIK 840D CNC ha desencadenado una alarma crítica [TO unit %1: ] H number %2 assigned more than once. H number linked again.. 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 = TO unit %2 = H number Definitions: This error can only occur when MD10880 $MN_MM_EXTERN_CNC_SYSTEM= 1 or 2. The Power ON effective MD10890, $MN_EXTER N_TOOLPROG_MODE, bit 3 has been reset. On reconstructing data handling after Power ON, it has been found that different edges of the same TO unit have the same H number. They had been linked previ ously. They are linked again and MD10890 $MN_EXTERN_TOOLPROG_MODE, bit 3 is set again. Reaction: Alarm display. Remedy: H numbers must be assigned only onc e in a TO unit. Then, MD10890, $MN_EXTERN_TOOLPROG_MODE, bit 3 can be set = 0 and a restart can be performed. Program Continuation: Clear alarm with the Delete key or NC START.

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 4503, 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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