Omron NX-EC0222

6 - 51
6 Incremental Encoder Input Units
NX-series Position Interface Units User’s Manual (W524)
6-9 Functions
6
6-9-3 Pulse Input Method
Input A is the count pulse input and input B is the count direction control input.
The count is incremented on the rising edge of the phase A when input B is ON and decremented on
the rising edge of the phase A when input B is OFF.
Change the Encoder Count Direction parameter in the Unit operation settings to change the count
direction.
Refer to 6-9-4 Encoder Count Direction on page 6-53 for information on changing the count direction.
Pulse + Direction Inputs
Phase A
Phase B
x2 multiplication
x4 multiplication
1
123456789101112 11109876543210
23456 543210
Incremental
encoder
Input A
Input B
Input Z
Counter
Sensor or
switch
Count pulse
Count direction
control
Count pulse
Count direction control
Incremented when ON.
Decremented when OFF.
1232123
ON
OFF