Siemens SIMATIC S7-1200 Manual page 263

Table A- 42 General specifications
Technical data
Order number
Dimensions W x H x D (mm)
Weight
Power dissipation
Current consumption (SM Bus)
Current consumption (24 VDC)
Number of inputs (Page 266)
Type
Diagnostics
The overflow and underflow diagnostic alarm information will be reported in the analog data values even if the alarms
1
are disabled in the module configuration.
RTD: For resistance ranges, underflow detection is never enabled.
2
When wire break alarm is disabled and an open wire condition exists in the sensor wiring, the module may report
3
random values.
Table A- 43 Wiring diagrams for SB 1231 TC and RTD
SB 1231 231-5QA30 AI 1 (16 bit) TC
①
Loop-back unused RTD input
② ③
2-wire RTD 3-wire RTD
Easy Book
Manual, 11/2011, A5E02486774-04
SB 1231 AI 1 (16 bit) TC
6ES7 231-5QA30-0XB0
38 x 62 x 21 mm
35 grams
0.5 W
5 mA
20 mA
1
Floating TC and mV
Overflow / underflow

Wire break

④
4-wire RTD
A.7 RTD and Thermocouple modules
1, 2
3
SB 1231 231-5PA30 AI 1 (16 bit) RTD
AI0 -
Technical specifications
SB 1231 AI 1 (16 bit) RTD
6ES7 231-5PA30-0XB0
38 x 62 x 21 mm
35 grams
0.7 W
5 mA
25 mA
1
Module-referenced RTD and Ω
Overflow / underflow
 1, 2
Wire break
 3
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