LogrobotLM

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FANUC Alarm PALL-172 — Invalid infeed number from PLC …

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

FANUC PALL-172 (“Invalid infeed number from PLC …”): The PLC sent an invalid infeed number. First check: Make sure a valid infeed number was sent by PLC.

Updated 2026-09-17 · LogrobotLM reference

Description

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

Remedy

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

Related codes

PALL-170Invalid pattern type in data filePALL-171System still in fault statePALL-173Invalid Pallet number from PLC …PALL-174Setup Application Completed

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 →