What is the bus network in PLCs?

• A. A wireless link between components
• B. A single wire carrying all data
• C. A coaxial cable used for power supply
• D. In PLCs is a set of parallel conductors used to deliver information at a high rate between electronic components

Answer: (C)

In PLCs, a bus network is the data pathway that links the processor with memory and input/output modules. It’s typically a backplane with a set of parallel conductors that carry data, addresses, and control signals. Because multiple bits can travel simultaneously, the bus delivers information at a high rate between electronic components, enabling fast communication inside the PLC.

This is not a wireless link, nor a single wire, nor a coax for power. The strength of the bus lies in its multiple parallel lines, which move larger chunks of data quickly and coordinate how components interact.