Code 461: PRIORITY No. OVERLAP
Issue Description & Safety Warning
The Mazak Mazatrol Matrix CNC has triggered a critical PRIORITY No. OVERLAP alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Type of error: A — Operation (a wrong key was pressed or the machine was operated incorrectly) Stopped status: L — Operation continued Clearing procedure: S — Press clear key Display colour: Blue On-screen parameters (shown in parentheses): WNo., UNo., SNo. Cause: The same priority number is assigned to different tools. Action: Within one process, the same priority number must not be assigned to different tools. Change the priority number.
Source: Mazak Mazatrol Matrix — Parameter List, M-Codes, Alarm Manual (Section 3 Alarm)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Mazak Mazatrol Matrix CNC Alarms
Mazak controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 461 on the Mazatrol Matrix CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Mazak's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 714 Mazak Mazatrol Matrix CNC codes.
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