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FANUC Alarm FXTL-171 — Invalid shim move.

FANUC FXTL-171 (“Invalid shim move.”): Invalid shim move has occurred. First check: Use Model Move to move the units to the shim step before shimming the particular step.

Updated 2026-09-17 · LogrobotLM reference

Description

Invalid shim move has occurred. Yoc cannot execute a shim move due to mismatch of tray number, program number, or step number with the current tray state.

Remedy

Use Model Move to move the units to the shim step before shimming the particular step.

Related codes

FXTL-169Jog keys are enabled.FXTL-170Teach Pendant is disabled.FXTL-201Inverse kinematic error.FXTL-202Invalid wrist type.

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 →