Siemens SIMATIC S5-90U System Manual page 431

S5-90U/S5-95U
Analog Value Representation
Table 15-20. Analog Input Module 464-8MC11 (Bipolar Fixed-Point Number)
Units Meas. Val.
in V
>4095 20.000
4095 19.995
2049 10.0048
2048 10.000
1024 5.000
1 0.0048
0 0.0
- 1 - 0.0048
- 1024 - 5.000
- 2048 - 10.000
- 2049 - 10.0048
- 4095 - 19.995
<- 4095 - 20.000
Standard function block FB 250 (read in analog value) can be used to normalize the analog value.
Set type of channel y = 6 "bipolar fixed-point number" in function block FB250.
EWA 4NEB 812 6115-02b
High Byte
0 1 1 1 1 1 1
0 1 1 1 1 1 1
0 1 0 0 0 0 0
0 1 0 0 0 0 0
0 0 1 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
1 1 1 1 1 1 1
1 1 1 0 0 0 0
1 1 0 0 0 0 0
1 0 1 1 1 1 1
1 0 0 0 0 0 0
1 0 0 0 0 0 0
Low Byte
1 1 1 1 1 1 0 0
1 1 1 1 1 1 0 0
0 0 0 0 0 1 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 1 0 0
0 0 0 0 0 0 0 0
1 1 1 1 1 1 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
1 1 1 1 1 1 0 0
0 0 0 0 0 1 0 0
0 0 0 0 0 1 0 0
Module Spectrum
Range
1 Overflow
0 Overrange
0
0
0
0
0 Nominal range
0
0
0
0 Overrange
0
1 Overflow
15-65