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3.  Tool Offset (L system) 

3.2  Tool Length Data 

 

 

 

I-83 

Refer to "3 (II). Tool Offset (M system)" for M system.

 

This function automatically calculates the amount of tool length offset, by moving the tool to the 
measurement point with the manual feed. There are two types of measurement methods in manual tool 
length measurement I: the basic point method and the measurement value input method. The required 
method is selected by setting parameter #1102 tlm.  

 

Obtain the tool length with the tool nose placed on the measurement point.  

 
 

Measurement point 

 

Set the measurement point in 
parameter #2015 tlml– beforehand.

 

Actually cut the workpiece. Measure its dimensions, and obtain the tool length from the measured 
values. 

 

Workpiece 

Measurement basic point 

Measurement 
value 

 

The measurement basic point is 
characteristic for each machine (the 
center of the chuck face, etc.).

 

(Note)  The tool length from tool length measurement I is as follows, depending on the whether the 1st 

reference point coordinate values have been set.  

 

If the 1st reference point coordinate values have been set: 

 

X-axis 
tool length 

Program basic 
position 

Z-axis tool length 

 

 
 
If the 1st reference point coordinate 
values have been set, the tool length is 
the distance from the tool's hypothetical 
nose to the tool basic position. 

 

 

If the 1st reference point coordinate values have not been set: 

 

Z-axis tool 
length 

X-axis tool length 

 

If the 1st reference point coordinate 
values are set to "0", the tool length is 
the distance from the tool's hypothetical 
tool nose to the machine basic position.