FANUC Alarm MHND-242 — WARN Parameter … error

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

FANUC MHND-242 (“WARN Parameter … error”): Send PC Macro data error. First check: Check other alarm log errors for more details.

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 →