AUMA ACE C 01.2 Profinet Series Manual page 9

Actuator controls
AC 01.2/ACExC 01.2 Profinet
Ring topology
2.6. Profinet communication cable
Figure 4: Tree topology
When applying this topology, the devices and the DCS are connected in series. The
major difference to line topology is that both the first and the last device are connected
to the DCS. The ring topology is recommended when redundancy structures are
required. However, make sure that this topology is supported by the DCS.
Figure 5: Ring topology
According to IEC 61156-6, CAT 5 cables are specified as minimum requirement for
Profinet. However using CAT 5e and CAT 6 cables is recommended. For further
references regarding planning an installation of Profinet networks, the PROFIBUS
User Organisation (PUN) provides suitable guidelines.
The following tables list the available cable types Profinet types A through C with
regard to the respective application:
General information on Profinet
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