The 11-, 12-, 13- and 15-bit resol sign are shown in the following table. Each analog
value is entered left-justified in the ACCU. The bits marked with "x" are set to "0".
Table 13-11 Measured-value resolution of the analog values (SIMATIC S7 format)
Resolution i
n Bits
Units
Analog value
decimal
hexadeci‐
mal
High byte
Low byte
11+VZ
16
10
H
S 0 0 0 0 0 0 0
0 0 0 1 x x x x
12+S
8
8
H
S 0 0 0 0 0 0 0
0 0 0 0 1 x x x x
13+S
4
4
H
S 0 0 0 0 0 0 0
0 0 0 0 0 1 x x
15+S
1
1
H
S 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1
Note
This resolution does not apply for temperature values. The converted temperature values are
the result of a conversion in the analog electronic module.
13.8.3
Measuring ranges of the analog input modules in S7 format
Introduction
The tables in this section contain the digitized analog values for the measuring ranges of the
analog input modules.
The binary representation of the analog values is always the same, so these tables only
compare the measuring ranges and the units.
Measuring ranges for voltage: ± 80 mV
Table 13-12 SIMATIC S7 format: Measuring range ±80 mV
Measuring range ± 80
mV
Units
Range
decimal
hexadecimal
> 94.071
32767
7FFF
H
Overflow
94.071
32511
7EFF
H
Overrange
:
:
:
80.003
27649
6C01
H
80.000
27648
6C00
H
60.000
20736
5100
H
:
:
:
Nominal range
- 60.000
-20736
AF00
H
- 80.000
-27648
9400
H
Analog electronic modules
13.8 Representation of analog values
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
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