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FANUC Alarm FRCE-171 — F/S output data frozen (F:%d^1)

FANUC FRCE-171 (“F/S output data frozen (F:%d^1)”): The output data from the sensor head is frozen (unchanging). First check: 1. Check the force sensor output data on TP (Force sensor status screen). Likely part: Sensor board (Sensor interface board).

Updated 2026-08-29 · LogrobotLM reference

Description

The output data from the sensor head is frozen (unchanging).

Remedy · Remède

1. Check the force sensor output data on TP (Force sensor status screen). The value must vary slightly over time due to sensor background noise. If the value is constant, it is frozen; go to the next step. 2. Check the sensor cable connectivity. Check also for cut lines. If there is nothing wrong, go to the next step. 3. Replace the sensor board. If this

Part to check / replace · Pièce à contrôler / remplacer

FANUC FRCE-171 points to the hardware below — start here before ordering. · FRCE-171 met en cause l'organe ci-dessous : commencez par là.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering. · Touchez une pièce pour tous les codes qui la citent ; vérifiez la variante exacte avant commande.

Frequently asked · Questions fréquentes

What does FANUC alarm FRCE-171 mean?
FANUC FRCE-171 (“F/S output data frozen (F:%d^1)”): The output data from the sensor head is frozen (unchanging).
How do you troubleshoot FANUC alarm FRCE-171?
1. Check the force sensor output data on TP (Force sensor status screen). The value must vary slightly over time due to sensor background noise. If the value is constant, it is frozen; go to the next step. 2. Check the sensor cable connectivity. Check also for cut lines. If there is nothing wrong, go to the next…
Which part is involved in FANUC FRCE-171?
FRCE-171 points to Sensor board (Sensor interface board). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

FRCE-169SCRDY reset error (F:%d^1)FRCE-170HCRDY reset error (F:%d^1)FRCE-172F/S communication error (F:%d^1)FRCE-173F/S external error (F:%d^1)

Same hardware involved / Même matériel en cause

FRCE-152Sensor boardFRCE-153Sensor boardFRCE-154Sensor boardFRCE-155Sensor board

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →