You should read the information about the [NetworkViewer] real-time interaction tool and the [NETVProtocolStack] before getting started.
Here are the links for quick starters :
OpenECoSys-Wiki: NETVProtocolStack
OpenECoSys-Wiki: NetworkViewer
OpenECoSys-Wiki: Use_NetV_as_a_serial_interface_-_16_bits
OpenECoSys-Wiki: Use_NetV_as_a_serial_interface_-_8_bits