Siemens ET 200S - Page 306

Digital Electronic Modules
11-30
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Block Diagram
Backplane bus
ET 200S
backplane bus
interface
module
L+
1M
P1
Input
electronics
1
P2
Input
electronics
2
Input
electronics
5
Input
electronics
6
3
4
8
7
Short-circuit
protection
Reverse
polarity
protection
Figure 11-6 Block Diagram of the 4DI 24–48 VUC High Feature