FANUC Alarm LSTP-012 — ABORT LSU … is in HDWR FAIL mode

Manufacturer wording — ABORT LSU %d is in HDWR FAIL mode
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC LSTP-012 (“ABORT LSU … is in HDWR FAIL mode”): The Local Stop Unit is in hardware failure mode. First check: This is an internal system error.

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 →