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Products: AO-8, AO-V-8, Automation Server, DI-16, DO-FA-12, DO-FC-8, AS-P, PS-24V, RTD-DI-16, UI-16, UI-8/AO-4, UI-8/AO-V-4, UI-8/DO-FC-4
Functionalities: Central IO , Hardware
Product version: 1.8, 1.9, 2.0, 2.1, 3.0, 3.1

I/O Bus

arrow1_rotationI/O Bus Parts arrow1_rotationI/O Bus Restrictions

The I/O bus is a common bus that delivers power, address information, and communication to all devices connected to the bus. The I/O bus is provided to the devices through the backplane in the terminal bases. The term I/O bus also denotes the chain of devices that are connected together.

I/O Bus Parts

The I/O bus consists of the following parts:

  • Power bus

  • Address bus

  • Communication bus

For more information, see I/O Bus Parts .

I/O Bus Restrictions

The I/O bus imposes restrictions on the number of devices that can be connected to the bus and what type of devices that are allowed on certain positions.

For more information, see I/O Bus Restrictions .

  • Terminal Bases
  • I/O Bus Parts
  • I/O Bus Restrictions