Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 67

5.7 Absolute
5.7 5.7 Absolute 5.7 Absolute Absolute and
G91)
G91) G91) G91)
Programming Programming
Programming Programming
G90 X_ Z_
G91 U_W_
Explanation Explanation of of of of the Explanation the the
Explanation the parameters
G90 Absolute programming
X, Z Coordinate values on X axis and Z axis in the coordinate system
G91 Incremental programming
U, W Coordinate values with reference to the previous position in the coordinate system
Function Function Function Function
The tool is moved to the specified position.
and Incremental
and Incremental and Incremental Programming Incremental
parameters parameters
parameters
Programming
Programming (G90, Programming
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5. Coordinate System
(G90,
(G90, (G90,