
B-63943EN-1/02 8.MULTI-PATH CONTROL
- 853 -
(2) Setting the reference points for a multipath interference check
When bit 7 (IFP) of parameter No. 8140 is set to 1, multipath
specifications are used, with which a multipath interference check is
made.
When reference position return operation is completed with all axes
on all paths belonging to the same machine group, set the reference
point of the tool post on path 1 belonging to the machine group as the
origin of the ZX plane coordinate system. Also set the position of
the reference point of the tool post on each of other paths in the
coordinate system in parameters Nos. 8141 and 8143 (parameters for
the X- and Z-axes are provided for each path).
Tool post 4
Tool post 3
Tool post 2
The tool post on path 1 belonging to the same
machine group is used as the reference tool
post.
+
+Z
1
1
3
Paths belonging to the same machine group
ε
2
3
2
Tool post 1
Reference point
Reference point
Reference point
Reference point
In the above example, there are the tool posts for four paths belonging
to the same machine group. In the ZX plane coordinate system in
which the reference point of tool post 1 on path 1 belonging to the
same machine group is used as the origin, set the X coordinate (ε
1
) of
the reference point of tool post 2 on path 2 in parameter No. 8141 for
path 2, and its Z coordinate (ζ
1
) in parameter No. 8143.
In the same way, in the ZX plane coordinate system in which the
reference point of tool post 1 is used as the origin, set the X coordinate
(ε
2
) of the reference point of tool post 3 on path 3 in parameter No.
8141 for path 3, and its Z coordinate (ζ
2
) in parameter No. 8143. In
the ZX plane coordinate system, set the X coordinate (ε
3
) of the
reference point of tool post 4 on path 4 in parameter No. 8141 for path
4, and its Z coordinate (ζ
3
) in parameter No. 8143.
The unit of setting is the least input increment. For an axis subject to
diameter specification, specify a diameter value.
Measure (ε
1
, ζ
1
), (ε
2
, ζ
2
), and (ε
3
, ζ
3
) when reference position return
operation is completed with all axes (when the tools are in their