PROGRAMMING2. CONTROLLED AXES
The names of three basic axes are always X, Y, and Z. The name of an
additional axis can be set to A, B, C, U, V, or W by using parameter 1020.
Parameter No. 1020 is used to determine the name of each axis.
When this parameter is set to 0 or a character other than the valid
characters is specified, an axis name from 1 to 8 is assigned by default.
When a default axis name (1 to 8) is used, operation in the MEM mode,
MDI mode or RMT mode is disabled.
If a duplicate axis name is specified in the parameter, operation is enabled
only for the axis specified first.
D Default axis name
D Duplicate axis names