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I/O-LED 4-0
Data fault on internal bus or Internal bus interruption on Coupler (Fault code 4, argument 0)
Wago · Modular I/O System PROFIBUS DP
¿Qué significa I/O-LED 4-0 ?
A data fault or a complete interruption of the internal bus has occurred, originating from or directly at the Fieldbus Coupler itself. This critical issue prevents any communication with all connected I/O modules, rendering the entire node inoperable.
Causas comunes
- Hardware defect in the coupler's internal bus interface circuitry
- Severe data corruption or physical interruption of the internal bus within the coupler
Pasos de reparación & Lista de verificación
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- 1
Replace the Coupler.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Wago Modular I/O System PROFIBUS DP