II - DCE FEL ČVUT v Praze

SIMATIC S7 Ex Analog Modules
Temperature range
type U
3-12
Table 3-11 shows the representation of the digitized measured value for the
temperature range, sensor type U.
Table 3-11 Representation of the digitized measured value of an analog input
module (temperature range, type U)
Temperature
range in C
Decimal Hexadecimal Range
> 850.0 32767 7FFFH Overflow
850.0
8500 2134H
:
:
:
Overrange
600.1
6001 0FA1H
1)
600.0
6000 0FA0H
:
:
:
:
:
:
Rated range
-200.0
-2000 F830H
-200.1 -2001 F82FH Underrange 1)
In the case of incorrect wiring (e.g. polarity reversal, open inputs) or a sensor fault in
the negative range (e.g. incorrect type of thermocouple), on dropping below F380H
the analog input module signals underflow and outputs 8000H.
1) The characteristic of the thermocouple is not defined in the overrange and
underrange. The rise of the characteristic curve is retained on leaving the linearized
range. It is not possible to specify the accuracy of these ranges.
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04