Mitsubishi Electric MELSERVO MR-J2S- A Instruction Manual page 339

15. ABSOLUTE POSITION DETECTION SYSTEM
(d) X-axis control program
This precludes execution of the X-axis start program while M3 (ready to send the ABS data) is
OFF.
Positioning X-axis start
command M3
mode
Ready to
send the
ABS date
(e) Dog type home position return
For an example of a program for the dog type home position return operation, refer to the home
position return program presented in the User's Manual for A1SD71.
(f) Data set type home position return
After jogging the machine to the position where the home position (e.g.500) is to be set, choose the
home position return mode set the home position with the home position return start (PB ON).
After switching power on, rotate the servo motor more than 1 revolution before starting home
position return.
Do not turn ON the clear (CR) (Y45) for an operation other than home position return. Turning it
ON in other circumstances will cause position shift.
M9039 Home position return mode
PC RUN
Home position
return mode
Y41 X30
ABS Positioning
transfer
completion
mode
M20
Clear (CR) ON
timer request
M21
Data set type home
position return request
T10
Clear signal 100ms ON timer
M21
Data set type home
position return request
Note 1. If data of the home position address parameter is not written by using an A6GPP programming tol, etc. before
starting a program for data set type home position return, the circuits indicated by Note 1 are necessary and the
circuit indicated by Note 2 is not necessary.
2. Contrary to Note 1 above, if the home position address is written in the home position address parameter.
the circuit indicated by Note 3 is necessary and the circuits indicated by Note 1 are not necessary.
X37
Home position
return start PB
DTOP H0001
DFROP H0001
DTOP H0001
X-axis start program
PC ready
Y2D
PLS M20 Clear (CR) ON timer request
K1
T10 Clear (CR) 100ms ON timer
Setting data set type home position return request
SET M21
Resetting data set type home position return request
RST M21
Clear (CR) ON
Y45
Setting X-axis home position address "500"
DMOVP K500 D9
in the data register
K7912 D9 K1 *1:Changing X-axis home position address
K7912 D9 K1
K41 D9 K1 *1:Changing X-axis present position data
15 - 32
When M3 (ready to send the ABS data)
is turned ON, the X-axis start command
executes the X-axis start program.
(Note 1)
(Note 1)
(Note 2)