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The ENI file describes the EtherCAT network. This file describes the topology in which all slaves in the network are connected. It also describes which values are exchanged periodically.
In addition to the topology, the type of slaves must also be known. The different types of EtherCAT slaves are described in the ESI files.
See Understanding EtherCAT for more information.
To create an ENI file the following is required:
Items 2 and 3 can be covered with the software EC-Engineer. This software already includes a software EtcherCAT master. The EtherCAT network can then be attached to the Ethernet port of the PC and scanned by the software.