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FANUC Alarm FXTL-078 — Cannot shim IDLE move

FANUC FXTL-078 (“Cannot shim IDLE move”): A position that was specfied as IDLE in the model points file cannot be directly shimmed. First check: Shim the previous actual move step and the IDLE position will also get the new position data.

Updated 2026-09-17 · LogrobotLM reference

Description

A position that was specfied as IDLE in the model points file cannot be directly shimmed.

Remedy

Shim the previous actual move step and the IDLE position will also get the new position data. A move step has the JOINT, LINEAR, or MOVE keyword.

Related codes

FXTL-076Shim value out of rangeFXTL-077Rotational shim not allowedFXTL-079Sub-CPU did not startFXTL-080Tray … ready to run

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 →