8 Motion Commands
8-24
(i) Home Only Method
Travel is started at the creep speed in the direction specified by the sign of the creep speed. When the rising
edge of the home signal is detected, positioning is performed at the positioning speed. When positioning has
been completed, a machine coordinate system is established with the final position as the zero point.
The moving amount after the home signal is detected is set in the Home Offset. The positioning speed is set
in the Speed Reference Setting. If an OT signal is detected during creep speed operation, an OT alarm will
not occur, the direction will be reversed, and a search will be made for the home signal. If an OT signal is
detected during positioning speed operation, an OT alarm will occur.
Detecting the OT Signal during Creep Speed Movement
* 1. The SERVOPACK EXT1 signal.
* 2. The SERVOPACK P-OT signal.
* 3. The SERVOPACK N-OT signal.
Note: The stopping method when the OT signal is detected depends on the setting of
SERVOPACK parameters.
HOME signal
*1
NOT
*3
POT
*2
Start
Zero Point
Creep Speed
(OL
40)
Home Offset
(OL
42)
Positioning Speed
(OL
10)
HOME LS signal
*1
NOT
*3
POT
*2
Start
Zero Point
Creep Speed
(OL
40)
Home Offset
(OL
42)
Positioning Speed
(OL
10)
Creep Speed
(OL
40)
Parameter
Name
Setting
OW
3C
Home Return Type
15: Home Only Method
OL
10
Speed Reference
Set the positioning speed to use after detecting the home signal. The
sign is ignored. The travel direction will depend on the sign of the
Home Offset.
OL
40
Creep Speed
Set the speed to use when starting a zero point return. The travel
direction will depend on the sign of the creep speed.
OL
42
Home Offset
Set the travel distance from the point where the home signal is
detected. The travel direction will depend on the sign.