Code S02-2302: Initial parameter error
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Initial parameter 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
Details When high-speed serial incremental encoder (OSE104, OSE105) is connecte d, parameters for absolute posi- tion are set to ON. Set the parameters for absolute position detection to OFF. To detect an absolute position, replace the increm ental specification encoder with an absolute encoder. Remedy Check that all the related para meters are specified correctly. sv017:SPEC, sv025:MTYP
Source: Mitsubishi M800/M80/E80 Series Alarm/Parameter Manual (IB-1501279)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Mitsubishi M800/M80 CNC Alarms
Mitsubishi controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code S02-2302 on the M800/M80 CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Mitsubishi's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 722 Mitsubishi M800/M80 CNC codes.
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