
OPERATION
B–63534EN/02
11. SETTING AND DISPLAYING DATA
1073
+Z
+X
Tool
Workpiece
OFSW
OFSR : Cutter compensation value for the tool used to measure the workpiece origin offset
Xm : Amount of movement from the machine zero point to the workpiece origin when
measured with a tool having a length of OFSR
OFSW : Workpiece origin offset
OFSR
Xm
Workpiece
origin
Machine
zero point
As can be seen from the above figure, the workpiece origin offset can
be calculated from the following formula:
OFSW = Xm – OFSR
Pay particularly careful attention, however, to the sign of the cutter
compensation value OFSR:
The sign of OFSR is – when the measurement surface is located in the
positive (+) direction relative to the tool center.
The sign of OFSR is + when the measurement surface is located in the
negative (–) direction relative to the tool center.