Siemens SIMATIC S7-400 Reference Manual page 266

Analog modules
5.22 Analog input module SM 431; AI 16 x 13 Bit (6ES7431-0HH00-0AB0)
Connection diagram for SM 431; AI 16 x 13 bit
Figure 5-31
266
1
2
3 L+
4
5
6
7
8
9
10
11
12
13
14
15
16
Tr
17
18
Tr
19
20
21
Tr
22
23
Tr
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Tr
39
40
Tr
41
42
43
Tr
44
45
Tr
46
47
M
48
Connection diagram for SM 431; AI 16 x 13 bit
Voltage measurement
Current measurement
L+
M0+
Word 0
CH0
M0-
M1+
CH1 Word 2
M1-
M2+
Word 4
CH2
M2-
M3+
Word 6
CH3
M3-
M4+
CH4 Word 8
M4-
M5+
Word 10
CH5
M5-
M6+
CH6 Word 12
M6-
M7+
CH7 Word 14
M7-
M8+
Word 16
CH8
M8-
M9+
CH9 Word 18
M9-
M10+
Word 20
CH10
M10-
M11+
CH11 Word 22
M11-
M12+
CH12 Word 24
M12-
M13+
Word 26
CH13
M13-
M14+
CH14 Word 28
M14-
M15+
Word 30
CH15
M15-
M
Reference Manual, Ausgabe 11/2016, A5E00850736-08
S7-400 Automation System Module Data