FANUC Alarm IBSS-449 — … device not found

Manufacturer wording — %d.%d device not found
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC IBSS-449 (“… device not found”): System internal error First check: Document the events that led to the error, and call your FANUC or FANUC Robotics technical service representative.

Updated 2026-09-17 · LogrobotLM reference

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 →