Omron NX-EC0112, User Manual

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6 Incremental Encoder Input Units
NX-series Position Interface Units User’s Manual (W524)
6-
9 Fu
nct
ion
s
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
1 2 3 4 5 6 7 8 9 10 11 12 11 10 9 8 7 6 5 4 3 2 1 0
2 3 4 5 6 5 4 3 2 1 0
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.
1 2 3 2 1 2 3
ON
OFF