Siemens S7-1200 - Page 909

Technical specifications
A.8 Analog signal modules (SMs)
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
909
Table A- 141 Connector pin locations for SM 1231 AI 4 x 13 bit (6ES7 231-4HD32-0XB0)
Pin
X10 (gold)
X11 (gold)
1
L+ / 24 VDC
No connection
2
M / 24 VDC
No connection
3
GND
No connection
4
AI 0+
AI 2+
5
AI 0-
AI 2-
6
AI 1+
AI 3+
7
AI 1-
AI 3-
Table A- 142 Connector pin locations for SM 1231 AI 8 x 13 bit (6ES7 231-4HF32-0XB0)
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+
AI 2+
AI 4+
AI 6+
5
AI 0-
AI 2-
AI 4-
AI 6-
6
AI 1+
AI 3+
AI 5+
AI 7+
7
AI 1-
AI 3-
AI 5-
AI 7-
Table A- 143 Wiring diagram for the analog input SM
SM 1231 AI 4 x 16 bit (6ES7 231-5ND30-0XB0)
Note: Connectors must be gold. See Appendix C, Spare Parts for order number.