Mitsubishi Electric MR-J2S-A Instruction Manual page 345

15. ABSOLUTE POSITION DETECTION SYSTEM
If the address of the machine home position is changed to any coordinate value other than "0", the
programmable controller coordinate system will be as illustrated below.
The power should be turned ON/OFF in the range in which the address increases on moving away
from the home position.
Machine home position
Programmable
controller coordinate
0 20000 30000
system
ABS
20000 0
coordinate
system
Absolute position data can be detected
ABS coordinate value error occurs if
power is turned on within this range
* Home position address changed to "2000"
a) If revolution direction parameter (Pr. 14)
(c) In a positioning program, the address of the positioning point should be determined by adding the
home position address to the target position address.
Example) After home position return, execute positioning at 1) to 3).
1) Positioning at position address 80000
(PC coordinate 140000)
2) Positioning at position address 130000
(PC coordinate 190000)
3) Positioning at position address 0
(PC coordinate 60000)
ABS coordinate
error region
Machine home position Home position (operation home
Programmable
controller
coordinate
0 10000
system
ABS coordinate
50000
system
Stroke limit
Mechanical limit
Home position
70000
50000
Direction in which
address increases
0
50000 60000
0
* Home position address changed to "50000"
If revolution direction parameter (Pr. 14) 0
15 - 24
WWW.NNC.IR
Machine home position
Programmable
controller coordinate
70000
system
ABS
50000
coordinate
Direction in which
system
address increases
Absolute position data can be detected
ABS coordinate value error occurs if
power is turned on within this range
* Home position address changed to "2000"
b) If revolution direction parameter (Pr. 14) 1
1)
(80000 60000)
position)
(130000 60000)
100000 150000
50000
(0 60000)
3)
Home position
30000 20000 0
0 20000
2)
Direction in which
address increases