issamty,
Really trying to get through some language barriers here. Do you need to be connected to the drive via USB for programming only? Ethernet/IP can be configured in several fault-tolerant topologies. Still the most common, least fault-tolerant being a "star" network. The ethernet can have multiple connections, and depending on how many connections the hardware allows may determine what the drive may do across a single physical port. USB communication on VFDs are typically limited to configuration, and not all parameters available while active. Ethernet ports may be for configuration, but also tend to have the ability to communicate to a PLC....most generally through a ethernet switch or hub, so that mutiple physical control may be connected for communication.
The Altivar61 appears to use an ethernet option card, that allows connecting the VFD physically to a control network. I posted a link from Schneider to your other post with information on setup of communication to a RSLogix5000 project. Most VFDs have some 'built-in" communications, with probably the most common being RS485 Modbus.
Bringing this all together within a PLC logic code is more specific to machine design and function.
Whenever I use Ethernet/IP within a control network, I always place a network switch with which to program PLC, and configure a VFD through locally to the PLC panel.