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FANUC Alarm TPIF-176 — Illegal state(D1:%d, D2:%d)

FANUC TPIF-176 (“Illegal state(D1:%d, D2:%d)”): The situation unexpected by the software occured. First check: Turn off controller power and turn it on again.

Updated 2026-08-29 · LogrobotLM reference

Description

The situation unexpected by the software occured. The index value indicates the reason.

Remedy · Remède

Turn off controller power and turn it on again. If the problem persists, document the events that led to the error and contact your FANUC technical representative.

Frequently asked · Questions fréquentes

What does FANUC alarm TPIF-176 mean?
FANUC TPIF-176 (“Illegal state(D1:%d, D2:%d)”): The situation unexpected by the software occured. The index value indicates the reason.
How do you troubleshoot FANUC alarm TPIF-176?
Turn off controller power and turn it on again. If the problem persists, document the events that led to the error and contact your FANUC technical representative.

Related codes / Codes liés

TPIF-174New pos. can't be handled part repr.TPIF-175Group was changed(Old:%d,Now:%d)TPIF-201Next line exist.TPIF-203Format does not match to unified specification

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →