LogrobotLM

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FANUC Alarm PNT2-677 — Estat HVON Failed

Manufacturer wording — %sEstat HVON Failed
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PNT2-677 (“Estat 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. First check: Check the status of the external E-stat controller.

Updated 2026-09-17 · 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.

Remedy

Check the status of the external E-stat controller.

Related codes

PNT2-675Estats disabledPNT2-676Estat controller not in remotePNT2-678Estat setpoint not reachedPNT2-679Estat 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. How this reference is built →