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Siemens Simatic S7-400 User Manual

Page 206

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Digital Modules

4-84

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Terminal Assignment and Block Diagram of the SM 422;
DO 16

120/230 VAC/2 A

Byte 0

16 digital outputs (4 chassis grounds)

Byte 1

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

47

46

48

Data register and bus control

10

LED control

F1

F2

F3

F4

1
2
3
4
5
6
7
8
9

1

2

0

3

5

6

4

7

5

6

4

7

1

2

0

3

4N

1N

1L

2L

3L

2N

4L

3N

INTF
EXTF

Process

Module

Figure 4-20

Terminal Assignment and Block Diagram of the SM 422; DO 16

120/230 VAC/2 A

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