FANUC Alarm IBSS-391 — Board has not enough memory

Manufacturer wording — %s:Board has not enough memory
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC IBSS-391 (“Board has not enough memory”): Please see manual IBS SYS FW G4 UM E from Phoenix Contact

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 →