553BTechnical specifications
A.7 Thermocouple and RTD signal modules (SMs)
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
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
and PT 10, 50, 100, 500 GOST (0.003850) standard
Units
Units
Pt x00
standard in
°C (1 digit =
0.1° C)
Decimal
Hexadecimal
Pt x00
standard in
°F (1 digit =
0.1 F)
Decimal
Hexadecimal
Range
> 1000.0
32767
7FFF
> 1832.0
32767
7FFF
Overflow
1000.0
:
850.1
10000
:
8501
2710
:
2135
1832.0
:
1562.1
18320
:
15621
4790
:
3D05
Overrange
850.0
:
-200.0
8500
:
-2000
2134
:
F830
1562.0
:
-328.0
15620
:
-3280
3D04
:
F330
Rated range
-200.1
:
-243.0
-2001
:
-2430
F82F
:
F682
-328.1
:
-405.4
-3281
:
-4054
F32F
:
F02A
Underrange
< -243.0
-32768
8000
< -405.4
-32768
8000
Underflow