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FANUC Alarm BELL-042 — PAUS Encoder is disconnected

FANUC BELL-042 (“PAUS Encoder is disconnected”): Controller is detecting a problem with the encoder cable. First check: Check encoder cable.

Updated 2026-09-17 · LogrobotLM reference

Description

Controller is detecting a problem with the encoder cable.

Remedy

Check encoder cable.

Related codes

BELL-040PAUS Illegal encoder multiplierBELL-041PAUS Encoder not enabledBELL-043WARN Trigger zone … non-increasingBELL-044PAUS Motion task has faulted

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →