LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm CPMO-079 — Preplan fail

Manufacturer wording — Preplan fail (G: %d^2)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC CPMO-079 (“Preplan fail”): The system is ready to start the next segment, but planning was cancelled. First check: Press RESET and cycle start the controller to continue.

Updated 2026-09-17 · LogrobotLM reference

Description

The system is ready to start the next segment, but planning was cancelled. The path might deviate from the normal path.

Remedy

Press RESET and cycle start the controller to continue. The path might deviate from the normal path.

Related codes

CPMO-077Can't resume same pathCPMO-078Seg OverrunCPMO-080EXTChannel not emptyCPMO-081EXT JBFSet not empty

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 →