Mitsubishi Electric A173UHCPU Programming Manual page 205

7. POSITIONING CONTROL
[Program Example]
POINT
(1) Do not set the travel value to zero for fixed-pitch feed control.
The following results if the travel value is set to zero:
(a) If all three axes are set to zero, the fixed-pitch feed ends with no feed
taking place.
(b) If the travel value is set to zero for any of the 3-axes, fixed-pitch feed
control will not occur at the normal positioning speed for the axis or
axes set to a non-zero travel value.
This program conducts fixed-pitch feed control using 3-axes linear interpolation
under the conditions below.
(1) System configuration
Fixed-pitch feed control using 3-axes linear interpolation of Axis, 1, Axis 2, and
Axis 3.
A61P A273UH A278
LX
CPU
MR- -B MR- -B MR- -B MR- -B
Axis
Axis
1
2
M M
(2) System configuration
(a) The positioning conditions are shown below.
Item
Servo program number
Positioning speed
Controlled axes
Travel value
(b) Fixed-pitch feed control start command ....... leading edge of X000
A61P AX41
Start command (X000)
Axis
Axis
4
3
M M
Setting
No. 320
1000
Axis 1 Axis 2
50000 40000
7 − 58
Axis 3
30000
(OFF → ON)