@*4&'-3(2*%<-CD4#+
Section 3-3
((
3-3
Input Signal Types
The type of input you require for your application is selected by means of four bits
in the Signal Type Word in DM. For every Counter the Signal Type can be selected
individually.
3-3-1
Phase Differential
Phase Differential Signals are connected to the inputs A, B and Z of every Coun-
ter. The count direction is determined by the phase angle between input A and
input B. If signal A leads to B, the counter increments. If signal B leads to A, the
counter decrements.
CNT1:
CNT2:
CNT3:
CNT4:
m+31
m+76
m+121
m+166
Signal Type:
0 = Phase Differential (multiplication x1)
1 = Phase Differential (multiplication x2)
2 = Phase Differential (multiplication x4)
4 = Up & down
8 = Pulse & Direction
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
A
B
Z
Incremental encoder
(Reset input)
Input Z
Input B
Input A
Counter
1
2
3
4
5
6
7
8
9
10 11 12
11 10
9
8
7
6
5
4
3
2
1
0
1
2
3
1
2
3
4
5
6
5
4
3
2
1
0
2
1
0
Phase A
Phase B
Multiplication x1
Multiplication x2
Multiplication x4
Forward rotation (CW)
Reverse rotation (CCW)
W902-E2-03.book Seite 55 Donnerstag, 7. Oktober 2004 2:06 14
Содержание CS1W-CT021
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