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FANUC Alarm CVIS-254 — AckQueue with invalid vision register number

FANUC CVIS-254 (“AckQueue with invalid vision register number”): The returned part is different from the part which was in the queue previously. First check: The last part retrieved by the GET_QUEUE instruction can be returned to the queue.

Updated 2026-09-17 · LogrobotLM reference

Description

The returned part is different from the part which was in the queue previously.

Remedy

The last part retrieved by the GET_QUEUE instruction can be returned to the queue.

Related codes

CVIS-252The range maximum value must be greater than or equal to the minimum.CVIS-253The range minimum value must be less than or equal to the maximum.CVIS-255No found pose of parent locator tool.CVIS-256GPM Locator tool: Fail to get reference position.

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 →