Siemens SIMATIC ET 200X - Page 57

Configuration Options
2-17
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Configuration examples
The illustration below shows a number of ET 200X configurations with power
modules. The load voltage can be:
 fed separately to each basic module and each power module 
 looped through from basic module to power module 
 looped through from power module to power module 
BM
EM
DI DI
BM
EM EM
DO DO DO
Supply voltage +
PROFIBUS-DP
Load voltage
Load voltage
BM
EM EM
BM
EM
DO DO
DO DO DO
3-core cable
...
Load voltage
EM
DO
Load voltage
Load voltage
PM
DO
PM
DO
PM
DO
PM
DO



Figure 2-10 Configuration examples with power modules
Note
Load voltage cannot be supplied to power modules from the basic module via the
ET 200X backplane bus. The load voltage must always be supplied via the power
module’s connector plug.