Siemens S5-135U/155U System Manual page 298

Interface Modules
Figure 7-5 Centralized Communication Between Central Controller and Expansion Units with a Power Supply
Unit
EU 184U
EU 187U
EU 184U
EU 187U
EU 184U
EU 187U
S5-135U/155U
CC
Figure 7-6 Centralized Communication Between Central Controller and Expansion Units without a Power Supply
Unit
The EU with the highest current consumption should be positioned as closely
as possible to the CC.
7-8
Terminator
IM 312-3
EU183U
IM 312-3
EU183U
IM 312-3
EU183U
IM 312-3
EU183U
IM 300-3
S5-135U/155U
CC
With this arrangement, the two
IM312-5 cabinets must be electrically
interconnected.
IM312-5
IM312-5
IM300-5
5 A max.
(1.5m)
IM 312-5
EU 184U
EU 187U
(0.5m)
EU 184U
IM 312-5
EU 187U
System Manual
C79000-G8576-C199-06