FANUC Alarm INTP-437 — Marker nesting too deep

Manufacturer wording — (%s^4, %d^5) Marker nesting too deep
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC INTP-437 (“Marker nesting too deep”): Depth of Marker nesting is greater than 10. First check: Reduce the nesting level of Marker.

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 →