FANUC Alarm DNET-016 — ERR_SYS_C System failed
FANUC DNET-016 (“ERR_SYS_C System failed”): The DeviceNet Interface system has failed. First check: Cold start the system.
Updated 2026-09-17 · LogrobotLM reference
Description
The DeviceNet Interface system has failed.
Remedy
Cold start the system. If the problem persists, INIT start or reload the system. If the problem continues to persist, document the events that led to the error and call your FANUC Robotics technical representative.
Related codes
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 →