
A-79344E
Title
Draw
No.
Ed. Date Design Description
Date
Jan.06.’04 Design. Apprv.
8/24
page
FANUC Series 30i-MODEL A
Input of tool offset value measured B
Setting of workpiece coordinate system shift amount
To deviate the programmed zero point of the workpiece coordinate system from the
workpiece end face, such as by adding a cutting allowance, use the incremental input of the
workpiece coordinate system shift amount in MDI operation. By setting the distance from
the programmed zero point to the workpiece end face with a sign, the numeric value input is
added to the preset amount.
Setting of cutting allowance
(0,0)
Measuring tool no
se position at the
mechanical machi
ne position
Machine
zero point
Workpiece coordinate
system zero point
(programmed zero point)
+Z
-EXOFSz
OFS
OFSz
Zt
+X
EXOFSz :Workpiece coordinate system shift amount to be set
OFSz:Tool geometry offset value
Zt:Mechanical coordinate value (Distance to the workpiece end face)
Cutting allowance
Imaginary zero point
Workpiece coordinate
system
programmed zero point
EXOFSz(NEW)
+X
W
+Z
EXOFSz(OLD):Workpiece coordinate system shift amount being set by the function of input of tool
offset value measured B
W:Cutting allowance (incremental input value)
EXOFSz(NEW):Workpiece coordinate system shift amount after adding the cutting allowance.
EXOFSz(OLD)