Mitsubishi C70

IV - 38
Appendix 7. Explanation of Alarms
Appendix 7.1 Operation Errors (M)
M01 Sensor signal illegal ON 0019
Details
The sensor signal was already ON when the "tool length measurement 1" signal was
validated.
The sensor signal turned ON when there was no axis movement after the "tool length
measurement 1" signal was validated.
The sensor signal turned ON at a position within 100 μm from the final entry start position.
Remedy
- Disable the "tool length measurement 1" signal and move the axis in a safe direction.
- Disabling the sensor signal also clears the operation alarm.
(Note) When the "tool length measurement 1" signal is disabled, the axis can be moved in
either direction. Pay attention to the movement direction.
M01 Ref point retract invalid 0020
Details
Reference position retract was performed while the coordinates had not been established.
Remedy
- Execute reference position return.
M01 Tool ofs invld after R-pnt 0021
Details
Reference position return had been performed during the tool escape and return, which
invalidated the tool compensation amount after the reference position return.
Remedy
- The error is cleared if the operation mode is changed to other than reference position
return before the axis performs reference position return.
- The error is cleared when the tool return is completed.
- The error is cleared if reset 1 is input or the emergency stop button is pushed.
M01 R-pnt ret invld at abs pos alm 0024
Details
A reference position return signal was enabled during an absolute position detection alarm.
Remedy
- Reset the absolute position detection alarm, and then perform the reference position
return.
M01 R-pnt ret invld at zero pt ini 0025
Details
A reference position return signal was input during zero point initialization of the absolute
position detection system.
Remedy
- Complete the zero point initialization, and then perform reference position return.
M01 High-accuracy skip disabled 0028
Details
The drive unit's hardware or software does not conform to the high-accuracy skip.
Remedy
- The software or hardware does not conform to the function. Contact service center.