Code Z70-0003: Abs posn param changed
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Abs posn param changed 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 Any of the parameters for absolute position detection has been changed. #1003 iunit #1017 rot #1018 ccw #1040 M_inch #2049 type #2201 PC1 #2202 PC2 #2218 PIT #2219 RNG1 #2220 RNG2 #2225 MTYP Remedy Correct the parameter settings. Then turn the power ON again and perform zero point initialization. (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
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 Z70-0003 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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