Siemens SIMATIC S7 System Manual page 719

NOTICE
After power is applied, the module performs internal calibration for the analog-to-digital
converter. During this time the module reports a value of 32767 on each channel until valid
data is available on that channel. Your user program may need to allow for this initialization
time. Because the configuration of the module can vary the length of the initialization time,
you should verify the behavior or the module in your configuration. If required, you can
include logic in your user program to accommodate the initialization time of the module.
Representation of Analog values for RTDs
A representation of the digitized measured value for the RTD standard temperature range
sensors are shown in the tables below.
Table A- 107 Representation of analog values for resistance thermometers PT 100, 200, 500, 1000
Pt x00
standard in
°C (1 digit =
0.1° C)
> 1000.0
1000.0
:
850.1
850.0
:
-200.0
-200.1
:
-243.0
< -243.0
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
and PT 10, 50, 100, 500 GOST (0.003850) standard
Units
Decimal Hexadecimal
32767 7FFF
10000 2710
: :
8501 2135
8500 2134
: :
-2000 F830
-2001 F82F
: :
-2430 F682
-32768 8000
A.7 Thermocouple and RTD signal modules (SMs)
Pt x00
standard in
°F (1 digit =
Decimal
0.1 F)
> 1832.0 32767
1832.0 18320
: :
1562.1 15621
1562.0 15620
: :
-328.0 -3280
-328.1 -3281
: :
-405.4 -4054
< -405.4 -32768
553BTechnical specifications
Units
Range
Hexadecimal
7FFF Overflow
4790 Overrange
:
3D05
3D04 Rated range
:
F330
F32F Underrange
:
F02A
8000 Underflow
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