BUS-LED 2-n

Faulty configuration byte n (Fault code 2, argument n)

Wago · Modular I/O System PROFIBUS DP

What does BUS-LED 2-n mean?

A specific configuration byte 'n' within the PROFIBUS configuration telegram is faulty. This indicates a problem with the integrity or correctness of the data used to define the Fieldbus Coupler's operational parameters, affecting its proper function.

Common Causes

  • Specific configuration byte 'n' is corrupted or incorrectly defined in the configuration data

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Get in contact with WAGO support.

Browse all codes in this manual (21)
Verified technical data. Last updated: March 2026

Related Faults

I/O-LED 1-2Unknown data type (Fault code 1, argument 2)I/O-LED 1-7Reserved (Fault code 1, argument 7)BUS-LED 1-1Insufficient configuration data (Fault code 1, argument 1)
Source: Wago Modular I/O System PROFIBUS DP
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