Siemens S7-1200 System Manual page 930

Technical specifications
A.9 Thermocouple and RTD signal modules (SMs)
Table A- 180 Noise reduction and update times for the RTD modules
Rejection frequency
selection
400 Hz (2.5 ms)
60 Hz (16.6 ms)
50 Hz (20 ms)
10 Hz (100 ms)
To maintain module resolution and accuracy when the 400 Hz filter is selected, the integration time is 10 ms. This
1
selection also rejects 100 Hz and 200 Hz noise.
Note
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- 181 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
930
Integration time
10 ms 4-/2-wire: 0.142
1
3-wire: 0.285
16.67 ms 4-/2-wire: 0.222
3-wire: 0.445
20 ms 4-/2-wire: 0.262
3-wire: .505
100 ms 4-/2-wire: 1.222
3-wire: 2.445
and PT 10, 50, 100, 500 GOST (0.003850) standard
Units
Decimal Hexadecimal
32767 7FFF
10000 2710
: :
8501 2135
8500 2134
: :
-2000 F830
Update time (seconds)
4-channel module
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
System Manual, 03/2014, A5E02486680-AG
8-channel module
4-/2-wire: 0.285
3-wire: 0.525
4-/2-wire: 0.445
3-wire: 0.845
4-/2-wire: 0.524
3-wire: 1.015
4-/2-wire: 2.425
3-wire: 4.845
Units
Range
Hexadecimal
7FFF Overflow
4790 Overrange
:
3D05
3D04 Rated range
:
F330
S7-1200 Programmable controller