What is Distributed I/O?

Distributed I/O (Input/Output) refers to an architecture where input and output devices are located remotely from the central processing unit (CPU) or controller. This allows for greater flexibility and scalability in industrial automation and control systems. Instead of all I/O devices being directly connected to the main controller, they are distributed throughout a plant or facility and connected via a network. This reduces wiring complexity, simplifies installation and maintenance, and improves system performance by allowing data to be collected and processed closer to the source. Common uses include industrial automation, remote monitoring, and process control applications, such as managing sensors and actuators in large manufacturing facilities.