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FANUC Alarm PNT1-096 — UOP immediate stop detected

FANUC PNT1-096 (“UOP immediate stop detected”): The IMSTP (immediate stop) UOP input was not asserted. First check: If you are using UOP signals, clear the source of the fault.

Updated 2026-09-17 · LogrobotLM reference

Description

The IMSTP (immediate stop) UOP input was not asserted.

Remedy

If you are using UOP signals, clear the source of the fault. If you are not using UOP signals, press MENUS, select I/O, and map all UOP signals to zero. Then cycle power on the controller.

Related codes

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 →