Interface Submodules
13-25
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Figures 13-7 and 13-8 show the circuit block diagrams and the terminal connection
diagrams for wiring the digital inputs and digital outputs.
Terminal connection diagram
Circuit block
diagram
Internal
data bus
M
internal
13
5M
12
5L+
11
DO0
10
DO1
9
DO2
8
DO3
7
6M
6
6L+
5
DO4
4
DO5
3
DO6
2
DO7
1
NC
DI7
25
DI6
24
4M
23
DI5
22
DI4
21
3M
20
DI3
19
DI2
18
2M
17
DI1
16
DI0
15
1M
14
Figure 13-7
Circuit Block Diagram and Terminal Connection Diagram for Wiring the Digital Inputs
Terminal connection diagram
Circuit block diagram
L+
M
M
internal
Internal
data bus
13
5M
12
5L+
11
DO0
10
DO1
9
DO2
8
DO3
7
6M
6
6L+
5
DO4
4
DO5
3
DO6
2
DO7
1
NC
DI7
25
DI6
24
4M
23
DI5
22
DI4
21
3M
20
DI3
19
DI2
18
2M
17
DI1
16
DI0
15
1M
14
Figure 13-8
Circuit Block Diagram and Terminal Connection Diagram for Wiring the Digital Outputs