LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm MOTN-187 — Protect of ACK BF to be read

FANUC MOTN-187 (“Protect of ACK BF to be read”): Failed to read ACK from slave. First check: Confirm communication status and retry the operation.

Updated 2026-08-29 · LogrobotLM reference

Description

Failed to read ACK from slave.

Remedy · Remède

Confirm communication status and retry the operation.

Frequently asked · Questions fréquentes

What does FANUC alarm MOTN-187 mean?
FANUC MOTN-187 (“Protect of ACK BF to be read”): Failed to read ACK from slave.
How do you troubleshoot FANUC alarm MOTN-187?
Confirm communication status and retry the operation.

Related codes / Codes liés

MOTN-185Protect of ACK BF to be sentMOTN-186Protect of BCST BF to be sentMOTN-188Protect of BCST BF to be readMOTN-189Slave motion remained

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 →