FANUC Alarm LANG-052 — Cannot load daughter program

Manufacturer wording — Cannot load daughter program(%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC LANG-052 (“Cannot load daughter program”): The loading of the daughter program failed. First check: Please check the contents of the specified file.

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 →