13. Program Support Functions
13.13 Tool Change Position Return
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13.13 Tool Change Position Return; G30.1 to G30.6
Function and purpose
By specifying the tool changing position in a parameter "#8206 TOOL CHG. P" and also specifying
a tool changing position return command in a machining program, the tool can be changed at the
most appropriate position.
The axes that are going to return to the tool changing position and the order in which the axes begin
to return can be changed by commands.
Command format
(1) The format of tool changing position return commands is as follows.
G30. n;
n = 1 to 6 : Specify the axes that return to the tool changing position and the order in
which they return.
For the commands and return order, see next table.
Command Return
order
G30.1
Z axis
→
X axis
•
Y axis
(
→
added axis)
G30.2
Z axis
→
X axis
→
Y axis
(
→
added axis)
G30.3
Z axis
→
Y axis
→
X axis
(
→
added axis)
G30.4
X axis
→
Y axis
•
Z axis
(
→
added axis)
G30.5
Y axis
→
X axis
•
Z axis
(
→
added axis)
G30.6
X axis
•
Y axis
•
Z axis
(
→
added axis)
(Note 1)
An arrow (
→
) indicates the order of axes that begin to return. An period (
•
)
indicates that the axes begin to return simultaneously. (Example : "Z axis
→
X axis, Y
axis" indicate that the Z axis returns to the tool changing position, then the X and Y
axes does.)
(2) The tool changing position return on/off for the added axis can be set with parameter "#1092
Tchg_A" for the added axis.
Note, however, that the added axis always return to the tool changing position only after the
standard axes complete returning (see the above table).
The added axis alone cannot return to the tool changing position.
(3) When the axis address is commanded in the same block as the tool change position return
command, the program error (P33) will occur.