LogrobotLM

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FANUC Alarm DNET-074 — ERR_STOP_C Load only at ctrl start

FANUC DNET-074 (“ERR_STOP_C Load only at ctrl start”): An I/O configuration file (.IO file) containing DeviceNet configuration data was loaded at COLD START. First check: Reload the.IO file at controlled start.

Updated 2026-09-17 · LogrobotLM reference

Description

An I/O configuration file (.IO file) containing DeviceNet configuration data was loaded at COLD START. The DeviceNet configuration data in this file is ignored.

Remedy

Reload the.IO file at controlled start.

Related codes

DNET-072WARN Found dupl. DNet daughterboardDNET-073WARN No match on mod type look-upDNET-076WARN $DN_DEV_DEFS array is fullDNET-077WARN DNet I/O inactive at CTRL start

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 →