Siemens S7-1200 - Page 927

Technical specifications
A.9 Thermocouple and RTD signal modules (SMs)
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
927
Table A- 175 Wiring diagrams for the RTD SMs
SM 1231 RTD 4 x 16 bit (6ES7 231-5PD32-0XB0)
SM 1231 RTD 8 x 16 bit (6ES7 231-5PF32-0XB0)
①
Loop-back unused RTD inputs
②
2-wire RTD ③ 3-wire RTD ④ 4-wire RTD
NOTE: Connectors must be gold. See Appendix C, Spare Parts for order number.
Table A- 176 Connector Pin Locations for SM 1231 RTD 4 x 16 bit (6ES7 231-5PD32-0XB0)
Pin
X10 (gold)
X11 (gold)
X12 (gold)
X13 (gold)
1
L+ / 24 VDC
No connection
No connection
No connection
2
M / 24 VDC
No connection
No connection
No connection
3
GND
No connection
No connection
No connection
4
AI 0 M+ /RTD
AI 1 M+ /RTD
AI 2 M+ /RTD
AI 3 M+ /RTD
5
AI 0 M- /RTD
AI 1 M- /RTD
AI 2 M- /RTD
AI 3 M- /RTD
6
AI 0 I+ /RTD
AI 1 I+ /RTD
AI 2 I+ /RTD
AI 3 I+ /RTD
7
AI 0 I- /RTD
AI 1 I- /RTD
AI 2 I- /RTD
AI 3 I- /RTD
Table A- 177 Connector Pin Locations for SM 1231 RTD 8 x 16 bit (6ES7 231-5PF32-0XB0)
Pin
X10 (gold)
X11 (gold)
X12 (gold)
X13 (gold)
1
L+ / 24 VDC
No connection
No connection
No connection
2
M / 24 VDC
No connection
No connection
No connection
3
GND
No connection
No connection
No connection
4
AI 0 M+ /RTD
AI 2 M+ /RTD
AI 4 M+ /RTD
AI 6 M+ /RTD
5
AI 0 M- /RTD
AI 2 M- /RTD
AI 4 M- /RTD
AI 6 M- /RTD
6 AI 0 I+ /RTD AI 2 I+ /RTD AI 4 I+ /RTD AI 6 I+ /RTD