Siemens SIMATIC ET 200S Manual page 363

Block diagram
P1
P2
Figure 12-17 Block diagram of the 4DO 24 VDC/2 A Standard
ET 200S Distributed I/O System
EWA-4NEB780602402-09
1M
Reverse polarity
protection and inter-
L+
nal voltage supply
Digital Electronic Modules
1
2
5
6
3
7
4*
8*
* M only for TM-E15S24-01
12-67