Digital Modules
4-80 S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Terminal Assignment and Block Diagram of the SM 422; DO 8 120/230 VAC/5 A
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1L
1N
1
2L
0
7L
7N
7
8L
6
3L
3N
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4L
2
5L
5N
5
6L
4
Data register and bus control
LED control
t
F100
F200
F300
F400
F500
F600
F700
F800
6N
8N
2N
4N
INFT
EXTF
Process Module

Figure 4-19 Terminal Assignment and Block Diagram of the SM 422; DO 8 120/230 VAC/5 A