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FANUC Alarm GUID-155 — SERVO Force sensor SLC-2 init

FANUC GUID-155 (“SERVO Force sensor SLC-2 init”): Force sensor SLC-2 init SLC-2 (Serial Link Controller-2) initialization failed (DSP init). First check: Replace sensor head, interface board, and/or cable. Likely part: Sensor head (Sensor head).

Updated 2026-09-17 · LogrobotLM reference

Description

Force sensor SLC-2 init SLC-2 (Serial Link Controller-2) initialization failed (DSP init).

Remedy

Replace sensor head, interface board, and/or cable.

Part to check / replace

FANUC GUID-155 points to the hardware below — start here before ordering.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.

Related codes

GUID-153SERVO Force sensor ROM errorGUID-154SERVO Force sensor SLC-2 initGUID-156SERVO Force sensor data req failGUID-157SERVO Force sensor outer parity

Same hardware involved

FRCE-156Sensor headFRCE-158Sensor headFRCE-162Sensor headFRCE-163Sensor head

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 →