7.19 Origin Setting (Fn020)
When using an external encoder for fully-closed loop control, this function is used to set the current position
of external encoder as the origin (zero point position).
Use the following product as an absolute external scale.
Absolute separate linear scale (made by Mitutoyo Corporation)
ABS ST780A series
Model ABS ST78A
(1) Settings before Operation
The following settings are required before setting origin.
• If the /S-ON input signal is ON, turn OFF the signal.
• If Pn50A.1 is set to 7 (i.e., the servo is always ON), change the value.
(2) Operating Procedure
Step
Display after
Operation
Keys Operation
1
Press the MODE/SET Key to select the utility function
mode.
2 Press the UP or DOWN Key to select Fn020.
3
Press the DATA/SHIFT Key for approximately one second.
The display shown on the left appears.
4
Press the UP Key until "OSET5" is displayed.
Note:
If there is a mistake during key operations. "no_oP" will
blink for approximately one second and then "Fn000" will
be displayed again.
5
Display blinks
Press the MODE/SET Key to set the origin of the external
encoder.
After the setting is completed, "donE" will blink for approx-
imately one second.
6 After one second After "donE" is displayed, "OSET5" is displayed again.
7
Press the DATA/SHIFT Key for approximately one second.
"Fn020" is displayed again.
8 Turn OFF the power and then turn ON again to validate the setting.
MODE
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