3)
 CW(Clockwise)/CCW(Counter Clockwise) operation mode 
A-phase input pulse counts at rising , or B-phase input pulse counts at rising. 
Increasing operation executed when B-phase input pulse is Low with A-phase input pulse at 
rising, and Decreasing operation executed when A-phase input pulse is Low with B-phase 
input pulse at rising. 
Increasing/Decreasing 
classification 
A-phase input pulse High  A-phase input pulse Low 
B-phase input pulse High  - 
decreasing count 
B-phase input pulse Low  Increasing count  - 
   
  ▪ Operation example  
 
 
 
 
 
 
 
 
(2) Counter type 
2 types of count (Linear counter, Ring counter) can be selected for the applicable use based on 
functions. 
 
  ▪ Counter mode is saved at the following special K area. 
Mode 
Area per each channel (word) 
Reference
*1) 
Counter 
K300  K330  K360  K390 
0 : linear 
*1) If counter mode is set as value other than 0, 1, error code ‘20’ will occur.