LogrobotLM

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FANUC Alarm SYST-074 — WARN Karel shell failed

FANUC SYST-074 (“WARN Karel shell failed”): Communications with the Karel shell extension failed. First check: Cold start the controller.

Updated 2026-09-17 · LogrobotLM reference

Description

Communications with the Karel shell extension failed.

Remedy

Cold start the controller.

Related codes

SYST-072WARN Program not enabledSYST-073WARN Manual selection mismatchSYST-075WARN Shell init failureSYST-076WARN Shell condition setup failure

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 →