S5-115F Manual Analog Value Processing
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.
Figure 6-16. Representation of an Analog Signal in Digital Form
n
High Byte Low Byte
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15 14 13 12 11 10 9 8 7 6 5 4 3 2
n+ 1
2
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0
x
Byte No.
Bit No. 1 0
x x x
x represents an insignificant bit
Binary signal
EWA 4NEB 811 6148-02
6-31
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