User guide

Publication 1746-UM006B-EN-P - August 2005
2-6 Module Operation
Up/Down Pulse Inputs
With this input type, the counter increments on the rising edge of
pulses applied to input A and decrements on the rising edge of pulses
applied to input B. If pulses are applied to inputs A and B
simultaneously, the pulse counter retains its previous value.
The counter can be reset as described in Counter Reset Control on
page 2-9.
IMPORTANT
Specific wiring information is contained in Chapter 3.
Decrement pulse
Incrementing encoder
module
Increment pulse
or sensor
Increment pulse
12321012Count
Decrementing encoder
or sensor
Decrement pulse
(count up)
(count down)
Input A
Input B
Input Z