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15. ABSOLUTE POSITION DETECTION SYSTEM
(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 and set the home position with the home position return start switch
(X27) 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) (Y35) for an operation other than home position return. Turning it
on in other circumstances will cause position shift.
M9039
Y1D
Y31 X20 X27
M20
M21
T10
M20PLS
M21
D9K500DMOVP
K1D9K72H0000DTOP
T10
M21SET
K1
M21RST
Y35
(Note 1)
17)
Programmable controller ready
Clear (CR) ON timer request
Clear (CR) 100ms ON timer
Setting data set type home position return request
Resetting data set type home position return
request
Switch clear (CR) on
Setting X-axis home position address 500
in data register
*1: Changing X-axis home position address
(Note 2)
PC RUN
Home position
return mode
ABS transfer
mode
Positioning
completion
Home position
return start switch
Clear signal ON
timer request
Data set type home position return request
Clear signal 100ms ON timer
Data set type home position
return request
K1D9K1154H0000DTOP
19
)
18)
K1K9003K1150H0000TO
Y10SET
X1 X4Y10
Y10RST
XA
*1: Changing X-axis current value
*1: Writing positioning data No. 9003
Starting positioning
Switching BUSY signal off to switch start
signal off.
Positioning
start
Start
completion
BUSY
Error detection
Note 1. When the data of the home position address parameter is not written from GX Developer or the like before starting the data set
type home position return program, this sequence circuit is required.
When the home position address is written in the home position address parameter, change to the following circuit.
K1D9K72H0000DFROP
17)
2. Changes are stored temporarily to buffer memory at this time. An additional processing is required when changes should be
reflected to memory for OS or flash ROM. For details, refer to the positioning module user's manual.