Delta Electronics CTA4 Manuel d'utilisateur Page 15

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2.2.2 Setting up input mode of the counter
CTA offers 5 counting modes: counting up, counting down, command counting up/down, individual counting
up/down and quadrature input.
The minimum signal width of the counting speed:
Counting up
Prohibit
A
A
0
1
2
3
4
H
L
H
L
0
CP1
CP2
Present
Value
CP1: Counter input CP2: Counter input prohibited
Note: has to be larger than width of min. Input signal
A
Prohibit
A
A
0
1
2
3
4
5
H
L
H
L
0
CP1
CP2
Present
Value
CP1: Counter input prohibited CP2: Counter input
Note: has to be larger than width of min. Input signal
A
Counting down
Prohibit
A
A
n
n-2
n-1
n-4
n-3
H
L
CP1
CP2
Present
Value
0
H
L
CP1: Counter input CP2: Counter input prohibited
Note: has to be larger than width of min. Input signal
A
A
Prohibit
A
n
n-1
n-2
n-3
n-4
n-5
H
L
H
L
CP1
CP2
0
Present
Value
CP1: Counter input prohibited CP2: Counter input
Note: has to be larger than width of min. Input signal
A
Command counting up/down
Counting speed
Minimum signal width
1cps 500ms
30cps 16.7ms
1Kcps 0.5ms
5Kcps 0.1ms
10Kcps 0.05ms
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