Siemens Simatic M7-400 Reference Manual page 294

Analog Modules
Terminal Assignment Diagram of the SM 431; AI 8
1
2
3
L+
4
5
6
7
8
9
10
11
V
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
V
34
35
36
37
38
Tr
39
40
41
42
43
Tr
44
45
46
47
M
48
Figure 5-28 Terminal Assignment Diagram of the SM 431; AI 8 x 14 Bit
5-78
Thermocouples
Voltage measurement
Current measurement
L+
M0+
CH0
M0–
M1+
CH1
M1–
M2+
CH2
M2–
M3+
CH3
M3–
M4+
CH4
V
M4–
M5+
CH5
M5–
M6+
CH6
M6–
M7+
CH7
M7–
M
S7-400, M7-400 Programmable Controllers Module Specifications
14 Bit
Resistance measurement
Resistance thermometer
M0+
Word 0
M0–
CH0
IC0+
Word 2
IC0–
M1+
Word 4
M1–
CH2
IC1+
Word 6
IC1–
M2+
Word 8
M2–
CH4
IC2+
Word 10
IC2–
M3+
Word 12
M3–
CH6
IC3+
Word 14
IC3–
M
Word 0
Word 4
Word 8
Word 12
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