LogrobotLM

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FANUC Alarm PNT2-120 — Pulse coder position compare error

FANUC PNT2-120 (“Pulse coder position compare error”): The feedback velocity exceeds the specification. First check: Refer to the troubleshooting section in the Electrical Connection and Maintenance Manual.

Updated 2026-09-17 · LogrobotLM reference

Description

The feedback velocity exceeds the specification.

Remedy

Refer to the troubleshooting section in the Electrical Connection and Maintenance Manual.

Related codes

PNT2-118Motor overheat occurredPNT2-119Pulse coder communication errorPNT2-121Collision Detection (Hand Broke)PNT2-126Operation mode T1 Selected

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 →