Sm 1231 Rtd - Siemens SIMATIC S7 System Manual
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553BTechnical specifications
A.7 Thermocouple and RTD signal modules (SMs)
Representation of analog values for Thermocouple Type J
A representation of the analog values of thermocouples type J is shown in the table below.
Table A- 99
Type J in °C
> 1450.0
1450.0
:
1200.1
1200.0
:
-150.0
< -150.0
Faulty wiring (for example, polarity reversal, or open inputs) or sensor error in the negative
1
range (for example, wrong type of thermocouple) may cause the thermocouple module to
signal underflow.
A.7.2
SM 1231 RTD
SM 1231 RTD specifications
Table A- 100 General specifications
Technical data
Order number
Dimensions W x H x D (mm)
Weight
Power dissipation
Current consumption (SM Bus)
Current consumption (24 VDC)
20.4 to 28.8 VDC (Class 2, Limited Power, or sensor power from CPU)
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Table A- 101 Analog inputs
Technical data
Number of inputs
Type
714
Representation of analog values of thermocouples type J
Units
Decimal
Hexadecimal
32767
7FFF
14500
38A4
:
:
12001
2EE1
12000
2EE0
:
:
-1500
FA24
-32768
8000
SM 1231 AI 4 x RTD x 16 bit
6ES7 231-5PD30-0XB0
45 x 100 x 75
220 grams
1.5 W
80 mA
40 mA
1
SM 1231 AI 4 x RTD x 16 bit
4
Module referenced RTD and Ω
Type J in °F
Decimal
> 2642.0
32767
2642.0
26420
:
:
2192.2
21922
2192.0
21920
:
:
-238.0
-2380
< -238.0
-32768
SM 1231 AI 8 x RTD x 16 bit
6ES7 231-5PF30-0XB0
70 x 100 x 75
270 grams
1.5 W
90 mA
40 mA
SM 1231 AI 8 x RTD x16 bit
8
Module referenced RTD and Ω
System Manual, 11/2011, A5E02486680-05
Units
Range
Hexadecimal
7FFF
Overflow
6734
Overrange
:
55A2
55A0
Rated range
:
F6B4
8000
Underflow
S7-1200 Programmable controller
1
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- Introducing the S7-1200 Plc
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