
B-63783EN-1/01 3.MANUAL OPERATION
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Tool head coordinate display
The absolute coordinates of the tool head that result from control point
compensation in tool direction handle feed, tool axis perpendicular
handle feed, and tool head center rotation handle feed are displayed, as
well as the actual speed. They are displayed even during a manual
interrupt.
For tool head coordinate display, the coordinates relative to the current
position coordinates on the respective axes are calculated and
displayed by setting the distance from the tool's center of rotation to the
tool head in parameter No. 7557.
If DTH (bit 6 of parameter No. 7540) is 1, the distance from the tool's
center of rotation to the tool head is equal to the value of parameter No.
7557 plus the value of parameter No. 7548.
- Formulas for tool head coordinate display
The tool head coordinates displayed are those relative to the current
position coordinates on the respective axes that are determined using
the following formulas according to the machine configuration.
The variables in the formulas given below represent the following:
<Xd,Yd,Zd> : Tool head position
X,Y,Z,A,B,C : Coordinates of the current position on the respective
axes that are relative to the origin of the workpiece
coordinate system
<Jx,Jy,Jz> : Center-of-rotation compensation vector (parameter No.
7519)
<Cx,Cy,Cz> : Spindle center compensation vector (parameter No.
No.7520)
<Sx,Sy,Sz> : Shift vector
L : Distance from the tool's center of rotation to the tool
head
If DTH (bit 6 of parameter No. 7540) is 0,
L = Value of parameter No.7557.
If DTH (bit 6 of parameter No. 7540) is 1,
L = Value of parameter No. 7548 + Value of parameter No. 7557.
This is true to head 2 in twin table control.