LogrobotLM

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FANUC Alarm PNT1-677 — %sEstat HVON Failed

FANUC PNT1-677 (“%sEstat HVON Failed”): The robot sent the HVON signal to the E-stat controller, but did not get a HVON signal back from the E-stat unit.

Updated 2026-08-29 · LogrobotLM reference

Description

The robot sent the HVON signal to the E-stat controller, but did not get a HVON signal back from the E-stat unit. Check the status of the external E-stat controller.

Frequently asked · Questions fréquentes

What does FANUC alarm PNT1-677 mean?
FANUC PNT1-677 (“%sEstat HVON Failed”): The robot sent the HVON signal to the E-stat controller, but did not get a HVON signal back from the E-stat unit. Check the status of the external E-stat controller.

Related codes / Codes liés

PNT1-675%sEstats disabledPNT1-676%sEstat controller not in remotePNT1-678%sEstat setpoint not reachedPNT1-679%sEstat T.P. enable Timeout

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 →