LogrobotLM

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FANUC Alarm IBSS-206 — Firmware Updating Mode

FANUC IBSS-206 (“Firmware Updating Mode”): Controller started in firmware updating mode. First check: Firmware should be updated only in firmware updating mode.

Updated 2026-09-17 · LogrobotLM reference

Description

Controller started in firmware updating mode.

Remedy

Firmware should be updated only in firmware updating mode. Update the firmware if it is needed. Power off/on the controller to return normal mode.

Related codes

IBSS-204Runtime Error …IBSS-205Please power off for SlaveIBSS-207Firmware update successfulIBSS-208Firmware update failed …

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 →