Yaskawa YASNAC PC NC Programming Manual - Manual (Page 11)

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YASNAC PCNC Programming Manual Chapter 1: Programming Basics
• A linear axis (U-, V-, or W-axis) is defined as indicated in Table 1.5.
Table 1.1.1.5: Linear Axes
Note 1: The unit of output increment (motion increment) and input increment of linear axis is the same
as other linear axes (X-, Y-, and Z-axis). The linear axes indicated above can be treated in
exactly the same manner as other linear axes.
2: When the inch system is selected by using inch/mm selection function, dimensions must be
input in units of inches as with other axes (X-, Y-, and Z-axis)
Fig. 1.1.1.1 Fourth Axis (a-axis) in the Right-hand Coordinate System
(c) Number of simultaneously controllable axes with the 5-axis control function*
The fifth axis can be selected optionally. In this manual, the fifth axis is referred to as “b-
axis” and represents any of six axes – A, B, C, U, V, and W. Which address characters
should be used for the fifth axis is set for parameterspm1112, pm1113, and pm1114, and
pm1154, pm1155, and pm1156. The number of simultaneously controllable axes is indi-
cated in Table 1.6.
Linear Axis Definition
U-axis A linear axis parallel to X-axis.
V-axis A linear axis parallel to Y-axis.
W-axis A linear axis parallel to Z-axis.