LogrobotLM

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FANUC Alarm PALT-220 — WARN Message buffer to PC is full

FANUC PALT-220 (“WARN Message buffer to PC is full”): More than 20 messages have not been read by PTPC. First check: Check the motet communication and PTPC status.

Updated 2026-09-17 · LogrobotLM reference

Description

More than 20 messages have not been read by PTPC. It seems like the communication is slow or stopped.

Remedy

Check the motet communication and PTPC status.

Related codes

PALT-216ABORT SlipSheet pos. must be cartesian representationPALT-217PAUSE Position is not reachablePALT-221WARN PTPC message type … - illegal data receivedPALT-222WARN PTPC command ignored, in wrong mode

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 →