LSIS XBC-DN40SU - Page 211

b) Increasing/decreasing count operation by B-phase input signal
● 1-phase 2-input 1-multiplication operation mode
A-phase input pulse counts at rising and increasing/decreasing will be decided by B-phase.
Increasing/Decreasing classification
A-phase input pulse
rising
A-phase input pulse
falling
B-phase input pulse Off Increasing count -
B-phase input pulse On Decreasing count -
● Operation example
2) 2-phase count mode
a) 2-phase 4-multiplication operation mode
A-phase input pulse and B-phase input pulse count at rising/falling respectively. If A-phase
input is antecedent to B-phase input, increasing operation starts, and if B-phase input is
antecedent to A-phase input, decreasing operation starts.
▪ Operation example
Increasing
Decreasing
2
3
4
5
6
7
8
9
10
11
12
13
14
15
14
13
12
11
10
9
8
7
6
5
4
3
2
B-phase input pulse
Count value
A-phase input pulse
Increasing
Decreasing
Increasing
B-phase input pulse
Count value
7
8
9
10
9
8
7
8
Off
On
A-phase input pulse
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