Representation Of Analog Values; Representation Of Input Ranges - Siemens SIMATIC S7-1500/ET 200MP Manual

Representation of analog values

Introduction
This appendix shows the analog values for all measuring ranges supported by the AI 16xU BA
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 input ranges

The tables below set out the digitized representation of the input ranges separately for
bipolar and unipolar input ranges. The resolution is 16 bits.
Table C- 2 Bipolar input ranges
Dec. val- Measured
ue value in %
32767 >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
-32768 <-117.593
Analog input module AI 16xU BA (6ES7531-7LH00-0AB0)
Equipment Manual, 09/2020, A5E47052556-AA
Resolution of the analog values
Decimal
1
Data word
2 2 2 2 2
15 14 13 12 11
0 1 1 1 1
0 1 1 1 1
0 1 1 0 1
0 1 1 0 1
0 0 0 0 0
0 0 0 0 0
1 1 1 1 1
1 0 0 1 0
1 0 0 1 0
1 0 0 0 0
1 0 0 0 0
Values
Hexadecimal
1
H
2 2 2 2 2 2
10 9 8 7 6
1 1 1 1 1 1
1 1 0 1 1 1
1 0 0 0 0 0
1 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
1 1 1 1 1 1
1 0 0 0 0 0
0 1 1 1 1 1
0 0 1 0 0 0
0 0 0 0 0 0
Analog value
High byte Low byte
Sign 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
2 2 2 2 2
5 4 3 2 1 0
1 1 1 1 1
1 1 1 1 1
0 0 0 0 1
0 0 0 0 0
0 0 0 0 1
0 0 0 0 0
1 1 1 1 1
0 0 0 0 0
1 1 1 1 1
0 0 0 0 0
0 0 0 0 0
C
Range
Overflow
Overshoot
range
Rated range
Undershoot
range
Underflow
37