3 Operation and Configuration
3-16
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
In this configuration, count pulses are applied to input A. The direction of counting is controlled by the
level of the signal applied to input B. If input B is high, the Counter increments on the rising edges of
input A. If input B is low, the Counter decrements on the rising edges of input A.
Additional Information
For Counter Reset options refer to 3-6 Reset Counter.
3-3-3
Pulse & Direction
Input A
Input Z
Input B
Incremental encoder
or other pulse
generator
Counter
Count pulse
Direction
control
Sensor or
switch
3
1
2
2
1
2
3
Count pulse
Direction control:
High = Increment
Low = Decrement