LogrobotLM

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FANUC Alarm MHND-025 — WARN UOP CYCLE START can only resume

FANUC MHND-025 (“WARN UOP CYCLE START can only resume”): A UOP CYCLE START input was detected but no paused program exists. First check: None available.

Updated 2026-09-17 · LogrobotLM reference

Description

A UOP CYCLE START input was detected but no paused program exists.

Remedy

None available. This error is only generated if your Cell interface has been specified using $shell_cfg.$cont_only=TRUE. If this is the case, then for safety reasons UOP CYCLE START is only used for resuming paused programs.

Related codes

MHND-023WARN Robot is busy. Mode change pending.MHND-024WARN Step mode must be disabledMHND-026WARN Illegal DIN program select receivedMHND-027WARN … program select signal received

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 →