5. Servo operating 
 
4-25 
 
4.6.2.  Absolute value encoder initialization 
 
  1) When the absolute value encoder requires initialization 
 - During first operation 
 - When the encoder cable is separate from the servo drive 
 - After replacing the battery 
 - When the absolute encoder related alarm is generated 
  2) Absolute value encoder initialization (reset) method 
- 17bit serial absolute value encoder: When it sets the origin by itself, set the parameter   
(P01-20) to “ON” and it  will change to  “ON =>OFF” to initialize the current position. (Multi-
Turn data reset). When the absolute value related alarm is generated, execute  alarm reset 
by using alarm reset contact point (ALMRST). 
- When it sets the origin by itself, set the parameter (P01-20) to “ON” and it will change to   
“ON  =>OFF”  to  initialize  the  current  position.  Or  connect  the  power  to  encoder  terminal 
ERST (CN2-20) and Vcc terminal (CN2-19) for more than 4 seconds.