Siemens SIMATIC S7-1200 - Page 1513

Technical specifications
A.14 Analog signal boards (SBs)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1513
Table A- 209 Wiring diagram for the analog input SB
SB 1231 AI x 12 bit (6ES7231-4HA30-0XB0)
① Connect "R" and "0+" for current applications.
Note: Connectors must be gold. See Appendic C, Spare
Parts for article number.
Table A- 210 Connector pin locations for SB 1231 AI x 12 bit (6ES7231-4HA30-0XB0)
Pin
X19 (gold)
1
No connection
2
No connection
3
AI R
4
AI 0+
5
AI 0+
6 AI 0-