Code Z70-0004: Abs posn initial set illegal
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Abs posn initial set illegal 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 The zero point initialization point is not at the grid position. Remedy Perform the zero point initialization again. (Note) To release alarm "Z70 Abs data error", enter th e parameter data output wh en establishing the absolute position and turn ON the power again. For the rotary axis, however, the alarm cannot be released by entering the parameter data. Zero point initialization: Required Abs posn param restored 0005 (Axis name)
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 Z70-0004 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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