Siemens M7-400, S7-400 Terminal Assignment and Block Diagram of the SM 422; DO 16 24 VDC/2 A

Digital Modules
4-60 S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Terminal Assignment and Block Diagram of the SM 422; DO 16 24 VDC/2 A
Data register and bus control
LED control
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
1
2
0
3
1L+
5
6
4
7
5
6
4
7
1
2
0
3
2M
2L+
2L+
1M
3L+
3L+
2M
4L+
4L+
Process Module
1st supply group
2nd supply group
3rd supply group
4th supply group
5th supply group
6th supply group
7th supply group
8th supply group
Figure 4-14 Terminal Assignment and Block Diagram of the SM 422; DO 16 24 VDC/2 A