Siemens SIMATIC ET 200SP Manual page 27

Parameters/address space
4.4 Address space
Value ranges
Table 4- 8
Scalable measuring range
Overflow
High limit
Measuring range center
Low limit
Underflow
To obtain an absolute temperature, the measuring range center in the application program
(as offset) must be calculated with the value of the user data of the scalable measuring
range.
The measuring range center is always output in the user data as the value "0". The user data
are correspondingly mapped to the bipolar input ranges in S7 format. Underflow / overflow is
also formed in accordance with the limits of S7.
Rules
● The measuring range center must be within the nominal range of the underlying
measuring range. It is specified in integers.
● The scalable measuring range is spanned symmetrically over the measuring range
center. Depending on the resolution, various value ranges result (
● The scalable measuring range is limited by underflow and overflow of the underlying
measuring range:
– It is clipped at the underflow when it falls below the limit.
26
Value ranges
– It is clipped at the overflow when it exceeds the limit (
Measuring range resolution
2 decimal places
>325.11
325.11
0
-325.12
<-325.12
Analog input module AI 8xRTD/TC 2-wire HF (6ES7134-6JF00-0CA1)
3 decimal places
>32.511
32.511
0
-32.512
<-32.512
① ②
,
③
).
Manual, 02/2014, A5E32942580-AA
Values hex.
7FFF
H
7EFF
H
0
H
8100
H
8000
H
).