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 remote I/O network.
For a defined application and architecture, the ability to predict that the delay between an event (change of an input value) and the corresponding change of an output state is a finite time t, smaller than the time required for your process to run correctly.
remote I/O network
An Ethernet-based network that contains 1 standalone PLC or one Hot Standby system and remote I/O devices. There are 3 types of remote I/O devices: a local rack, a remote I/O drop, and a ConneXium extended dual-ring switch (DRS). Distributed I/O devices may also participate in a remote I/O network via connection to DRSs.
