Siemens SIMATIC ET 200AL, System Manual

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Representation of analog values
3.2 Representation of input ranges
Analog value processing
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Function Manual, 06/2014, A5E03461439-AC
3.2 Representation of input ranges
The tables below set out the digitalized representation of the input ranges by bipolar and
unipolar input ranges. The resolution is 16 bits.
Please see the device manuals for each analog input module for assignment of the values to
the specific measured values in each measuring range.
Table 3- 3 Bipolar input ranges
Dec.
value
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 >117.589 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 Over 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
Rated range 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
-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 Under range
-32512 -117.593 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
-32768 <-117.593 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Underflow
Table 3- 4 Unipolar input ranges
Dec.
value
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 >117.589 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 Over 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
Rated range 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
-1 -0.003617 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Under range
-4864 -17.593 1 1 1 0 1 1 0 1 0 0 0 0 0 0 0 0
-32768 <-17.593 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Underflow