FANUC Alarm CALM-025 — WARN File open error: …

Manufacturer wording — WARN File open error: %s
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC CALM-025 (“WARN File open error: …”): File open error: … Cannot open output file. First check: Check the path and file name.

Updated 2026-09-17 · LogrobotLM reference

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 →