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FANUC Alarm GUID-157 — SERVO Force sensor outer parity

FANUC GUID-157 (“SERVO Force sensor outer parity”): Force sensor outer parity error on FS I/F board outer RAM. First check: Replace interface board.

Updated 2026-09-17 · LogrobotLM reference

Description

Force sensor outer parity error on FS I/F board outer RAM.

Remedy

Replace interface board.

Related codes

GUID-155SERVO Force sensor SLC-2 initGUID-156SERVO Force sensor data req failGUID-158SERVO Force sensor inner parityGUID-159SERVO Force sensor comm failure

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 →