Mitsubishi Electric EZMotion-NC E68 Series Operation Manual page 149

(a) Returning to zero point
After turning the power ON, establish the coordinate system with the dog-type zero point
return.
If the absolute position is not established when using the absolute position detection
specifications, carry out initialization first.
(Note) This is not required if the axis to be measured is an axis with no zero point ("#2031
noref" = 1).
(b) Selecting the tool
Execute the T command with the "manual numeric command" on the "POSITION" screen or
with the MDI operation, select the tool.
(Note 1) Set the offset number of the selected tool in the R register.
(When setting from the user PLC, set as a BCD code.)
(Note 2) Preset the "tool length/wear data" for the tool to be used.
(c) Positioning the tool nose
Using JOG or the handle, move the nose of the axis to be measured above the workpiece
coordinate system zero point. The workpiece coordinate system offset data is measured one
axis at a time.
1) 1st axis (X axis) workpiece coordinate offset measurement
X
2) 2nd axis (Z axis) workpiece coordinate offset measurement
X
Workpiece
Workpiece coordinate
system zero point
Turret
Workpiece
Workpiece coordinate
system zero point
I-134
4. Parameters (User)
4.1 Workpiece Coordinate
Machine zero point
Turret
Machine zero point
Z
Z