Beckhoff EP9300-0022, Руководство пользователя

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Mounting and connection
EP9300-0022 18 Version: 2.3
4.2.2.3 Topology example
The Profinet network can be set up with a line structure. The following limits should be adhered to:
• Maximum 20 EP9300-0022 in series.
• No switches should be used in the line.
Fig. 7: Topology example
Use of switches without LLDP
Profinet uses the LLDP protocol for the topology recognition. The topology recognition and the as-
sociated Profinet services will not work properly if the switch that you use does not support this. In
addition, this results in increased network traffic, which is multiplied further with each switch port
and connected Profinet device. This can result in communication disruptions and even the aborting
of communication with individual Profinet devices.