Digital Modules
4-71
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Terminal Assignment and Block Diagram of the SM 422; DO 32
24 VDC/0.5 A
L+
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
4
7
0
3
5
6
1
2
4
7
0
3
5
6
1
2
4
7
0
3
5
6
1
2
4
7
0
3
5
6
M
1L+
2L+
2L+
3L+
3L+
4L+
4L+
3L+
2L+
4L+
1L+
M
Data register and bus control
LED control
Process
Module
Figure 4-17
Terminal Assignment and Block Diagram of the SM 422; DO 32
24 VDC/0.5 A