Siemens Simatic S7-400

5.4.3 Binary representation of input ranges
Input ranges
The input ranges shown in tables "Bipolar input ranges", "Unipolar input ranges", "Life-zero
input ranges" are defined in complementary 2-by-2 representation:
Table 5-6 Bipolar input ranges
Units Measured
value
in %
Data word Range
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
32767 >118,515 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Overflow
32511 117,589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Overshoot range
27649 >100,004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1
27648 100,000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0
1 0,003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
0 0,000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Nominal range
- 1 - 0,003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
- 27648 - 100,000 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0
- 27649 ≤- 100,004 1 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 Undershoot range
- 32512 - 117,593 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
- 32768 ≤- 117,596 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Underflow
Table 5-7 Unipolar input ranges
Units Measured
value in %
Data word Range
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
32767 ≧118,515 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Overflow
32511 117,589 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 Overshoot range
27649 ≧100,004 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 1
27648 100,000 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0
1 0,003617 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 Nominal range
0 0,000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
- 1 - 0,003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Undershoot range
- 4864 - 17,593 1 1 1 0 1 1 0 1 0 0 0 0 0 0 0 0
-32768 ≤- 17,596 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Underflow
Analog modules
5.4 Representation of analog values
S7-400 Automation System Module Data
170 Reference Manual, Ausgabe 11/2016, A5E00850736-08