
PROGRAMMING
B–63504EN/01
2. CONTROLLED AXES
33
The names of two basic axes are always X and Z; the names of additional
axes can be optionally selected from A, B, C, U, V, W, and Y by using
parameter No.1020.
Each axis name is determined according to parameter No. 1020. If the
parameter specifies 0 or anything other than the nine letters, the axis name
defaults to a number from 1 to 4.
When a default axis name (1 to 4) is used, the system cannot operate in
MEM or MDI mode.
If the parameter specifies an axis name more than once, only the first axis
to be assigned that axis name becomes operable.
NOTE
1 When G code system A is used, the letters U, V, and W
cannot be used as an axis name, because these letters are
used as incremental commands for X, Y, and Z. To use the
letters U, V, and W as axis names, the G code system must
be B or C. Likewise, letter H is used as an incremental
command for C, thus incremental commands cannot be
used if A or B is used as an axis name.
2 In G76 (multiple–thread cutting), the A address in a block
specifies the tool nose angle instead of a command for axis
A.
If C or A is used as an axis name, C or A cannot be used as
an angle command for a straight line in chamfering or direct
drawing dimension programming. Therefore, C and A
should be used according to bit 4 (CCR) of parameter No.
3405.
2.2
NAMES OF AXES
Limitations
D Default axis name
D Duplicate axis name