Siemens SIMATIC S7-1200 - Page 1475

Technical specifications
A.11 Thermocouple and RTD signal modules (SMs)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1475
Table A- 167 Connector pin locations for SM 1231 AI 4 x TC 16 bit (6ES7231-5QD32-0XB0)
Pin
X10 (gold)
X11 (gold)
1
L+ / 24 V DC
No connection
2 M / 24 V DC No connection
3
Functional Earth
No connection
4 AI 0+ /TC AI 2+ /TC
5
AI 0- /TC
AI 2- /TC
6
AI 1+ /TC
AI 3+ /TC
7
AI 1- /TC
AI 3- /TC
Table A- 168 Connector Pin Locations for SM 1231 AI 8 x TC bit (6ES7231-5QF32-0XB0)
Pin
X10 (gold)
X11 (gold)
X12 (gold)
X13 (gold)
1
L+ / 24 V DC
No connection
No connection
No connection
2
M / 24 V DC
No connection
No connection
No connection
3
Functional Earth
No connection
No connection
No connection
4
AI 0+ /TC
AI 2+ /TC
AI 4 I- /TC
AI 6 I- /TC
5
AI 0- /TC
AI 2- /TC
AI 4 I+ /TC
AI 6 I+ /TC
6
AI 1+ /TC
AI 3+ /TC
AI 5 M- /TC
AI 7 M- /TC
7
AI 1- /TC
AI 3- /TC
AI 5 M+ /TC
AI 7 M+ /TC
Note
Unused analog inputs should be shorted.
The thermocouple unused channels can be deactivat
ed. No error will occur if an unused
channel is deactivated.