Code 899: ILLEGAL TAPER LENGTH
Issue Description & Safety Warning
The Mazak Mazatrol Matrix CNC has triggered a critical ILLEGAL TAPER LENGTH 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: B — Registered data (the program or tool data includes an error) Stopped status: J — Single-block stop Clearing procedure: P — Press reset key Display colour: Red Cause: In the fixed-cycle (G290, G294), designation for the taper length or the taper height is incorrect. Action: Set the taper length or the taper height for the fixed-cycle (G290, G294) smaller than the travel of the axis.
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 899 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.
Have a better solution?
Help the industrial community by sharing your repair experience for code 899.
Need a searchable reference for more Mazak Mazatrol Matrix CNC manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026