Table A- 50
Wiring diagrams for the RTD SMs
SM 1231 RTD 4 x 16 bit
①
Loop-back unused RTD inputs
②
2-wire RTD
③
3-wire RTD
④
4-wire RTD
Note: Connectors must be gold. See the S7-1200 Programmable controller system manual, Appendix C.
A.8.3
SM 1231 TC specifications
Table A- 51
General specifications
Model
Order number
Dimensions
W x H x D (mm)
Weight
Power dissipation
Current consumption
(SM Bus)
Current consumption
1
(24 VDC)
Easy Book
Manual, 03/2014, A5E02486774-AF
SM 1231 RTD 8 x 16 bit
SM 1231 AI 4 x 16 bit TC
6ES7 231-5QD32-0XB0
45 x 100 x 75
180 grams
1.5 W
80 mA
40 mA
Technical specifications
A.8 RTD and Thermocouple modules
SM 1231 AI 8 x 16 bit TC
6ES7 231-5QF32-0XB0
45 x 100 x 75
xxx grams
1.5 W
80 mA
40 mA
321
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