LogrobotLM

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FANUC Alarm PALL-173 — Invalid Pallet number from PLC …

Manufacturer wording — Invalid Pallet number from PLC %s
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PALL-173 (“Invalid Pallet number from PLC …”): PLC sent an invalid pallet number. First check: Make sure a valid pallet number was sent by the PLC.

Updated 2026-09-17 · LogrobotLM reference

Description

PLC sent an invalid pallet number. The number must be greater than 0 and less than or equal to the 'number of pallets' set up.

Remedy

Make sure a valid pallet number was sent by the PLC. Check the PLC communication status.

Related codes

PALL-171System still in fault statePALL-172Invalid infeed number from PLC …PALL-174Setup Application CompletedPALL-175Can't use labels-out for triple gripper

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 →