Code 593: DNC I/O ERROR
Issue Description & Safety Warning
The Mazak Mazatrol Matrix CNC has triggered a critical DNC I/O ERROR 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: G — External I/O unit (malfunction of external I/O unit) Stopped status: L — Operation continued Clearing procedure: S — Press clear key Display colour: Blue Cause: - During use of DNC, processing has been aborted by line noise or other hardware factors. - RS-232C communication parameter settings (such as those of the baud-rate, etc.) between the host system and NC unit differ. - Timer, number-of-retries or other settings are not correct. Action: - Make line checks and hardware checks of the host system and NC unit. - Match the RS-232C communication parameter settings between the host system and NC unit. - Set the timer, number-of-retries, or other settings to those of the host system. (Parameters for the NC unit: DNC parameters)
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 593 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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