Representation Of Analog Values; Representation Of Output Ranges - Siemens Simatic S7-1500 Manual
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Representation of analog values
Introduction
This appendix describes the analog values for all output ranges supported by the
AQ 4xU/I ST analog module.
Measured value resolution
Each analog value is written left aligned to the tags. The bits marked with "x" are set to "0".
Table C- 1
Resolution in bits
including sign
16
C.1
Representation of output ranges
The tables below set out the digitalized representation of the output ranges by bipolar and
unipolar range. The resolution is 16 bits.
Table C- 2
Bipolar output ranges
Value dec.
Output
value in %
32511
117,589
32511
117,589
27649
100,004
27648
100,000
1
0,003617
0
0,000
-1
-0,003617
-27648
-100,000
-27649
-100,004
-32512
-117,593
-32512
-117,593
* When values > 32511 are specified, the output value is limited to 117.589%.
** When values < -32512 are specified, the output value is limited to -117.593%.
36
Resolution of the analog values
dec
1
Data word
2
2
2
2
2
2
15
14
13
12
11
10
0
1
1
1
1
1
0
1
1
1
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
1
0
1
1
0
0
1
0
0
1
0
0
0
0
0
1
0
0
0
0
0
Values
hex
1
H
2
2
2
2
2
2
9
8
7
6
5
4
1
0
1
1
1
1
1
0
1
1
1
1
0
0
0
0
0
0
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
1
1
1
1
1
1
0
1
0
0
0
0
0
1
0
0
0
0
Analog output module AQ 4xU/I ST (6ES7532-5HD00-0AB0)
Analog value
high byte
low byte
Sign 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1
Range
2
2
2
2
3
2
1
0
1
1
1
1
Maximum output
value*
1
1
1
1
Overshoot range
0
0
0
1
0
0
0
0
Rated range
0
0
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Undershoot range
0
0
0
0
0
0
0
0
Minimum output
value**
Manual, 09/2016, A5E03484696-AD
C
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