This part describes the process of selecting the proper topology for your system, as well as the limitations involved in constructing your network and the role of determinism in a typical RIO network.
For a defined application and architecture, you can predict that the delay between an event (change of value of an input) and the corresponding change of a controller output is a finite time t, smaller than the deadline required by your process.
RIO network
An Ethernet-based network that contains 3 types of RIO devices: a local rack, an RIO drop, and a ConneXium extended dual-ring switch (DRS). Distributed equipment may also participate in an RIO network via connection to DRSs or BMENOS0300 network option switch modules.