E84AYCER communication manual (PROFINET)
Installation
Electrical installation
26 L EDS84AYCER EN 2.0 - 11/2010
5.2 Electrical installation
5.2.1 EMC-compliant wiring
In typical systems, standard shielding is sufficient for Ethernet cables.
However, in environments with a very high level of interference, EMC resistance can be
improved by earthing the cable shield as well.
For this observe the following notes:
1. Remove the plastic sheath of the cable on a length of 2 cm.
2. Secure the cable shield to the shield connection of the standard device.
5.2.2 Network topology
It is typical for PROFINET to have a rather free topology the limiting factor of which is large
message latencies due to e.g. switches connected in series.
Internal switch latency
( 20)
The combination of a line and a stub is useful for system wiring.
PROFINET supports the following topologies:
Switch / star
[5-4] Switch / star topology (S = switch, D = IO device)
Documentation for the standard device, control system, plant/machine
Observe the notes and wiring instructions contained in this documentation.
E94YCER005
S
D
DD
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