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S5-115F Manual
6.7
Digital Representation of an Analog Value
The CPU uses two bytes to represent the value of an output channel. Figure 6-16 explains the
individual bits.
Byte No.
Bit No.
x
represents an insignificant bit
Figure 6-16. Representation of an Analog Signal in Digital Form
EWA 4NEB 811 6148-02
High Byte
n
15 14 13 12 11 10
11
10
9
8
7
2
2
2
2
2
2
Binary signal
9
8
7
6
5
6
5
4
3
2
1
2
2
2
2
2
Analog Value Processing
Low Byte
n+ 1
4
3
2
1
0
0
2
x
x
x
x
6-31
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