FANUC Alarm TG-018 — Trigger Buffer is Full
FANUC TG-018 (“Trigger Buffer is Full”): There are too many outstanding trigger events that have not yet been fired. First check: Examine the TP programs executing at the time of the error to confirm that there are not a large number of short or zero length motion segments back-to-back with application instructions.
Updated 2026-09-17 · LogrobotLM reference
Description
There are too many outstanding trigger events that have not yet been fired. This indicates either an excessive number of short motion segments with trigger instructions, or else an internal error.
Remedy
Examine the TP programs executing at the time of the error to confirm that there are not a large number of short or zero length motion segments back-to-back with application instructions. If this condition does not exist, then obtain a controller backup (and easy debug if available) from the time of the error and contact your FANUC or FANUC Robotics Technical Representative.
Related codes
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 →