Siemens SIMATIC S7-400 Reference Manual page 184
Automation system module
data
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Analog modules
5.4 Representation of analog values
Representation of analog values for thermocouples type U
Table 5-30
Representation of analog values for thermocouples type U
Type U in °C Unit dec‐
imal
> 850,0
32767
850,0
8500
:
:
601,0
6010
600,0
6000
:
:
-200,0
-2000
< -200,0
< -2000
Faulty wiring (polarity reversal, or open inputs, for example), or sensor error in the negative range (wrong
type of thermocouple, for example) will cause the analog input module to signal underflow, starting at ...
... F380
, and to output 8000
H
184
Unit hex‐
Type U in °F Unit dec‐
adeci‐
mal
7FFF
> 1562,0
32767
H
2134
1562,0
15620
H
:
:
:
177A
1113,8
11138
H
1770
1112,0
11120
H
:
:
:
F830
-328,0
-3280
H
< F830
< -328,0
< -3280
H
.
... EAC0
, and to output 8000
H
H
Unit hex‐
Type U in K Unit dec‐
imal
adeci‐
mal
7FFF
> 1123,2
H
2738,0
1123,2
H
:
:
2B82
874,2
H
2B70
873,2
H
:
:
F330
73,2
H
< F330
< 73,2
H
.
... FE2C
H
Reference Manual, Ausgabe 11/2016, A5E00850736-08
Unit hex‐
imal
adecimal
32767
7FFF
H
11232
2BE0
H
:
:
8742
2226
H
8732
221C
H
:
:
732
02DC
H
< 732
<02DC
H
, and to output 8000
.
H
H
S7-400 Automation System Module Data
Range
Overflow
Overshoot
range
Nominal range
Underflow
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