What is the Difference Between Remote IO and Local IO?
Remote and local I/O refers to the placement and interaction of input/output modules in an industrial control system. However, there are several differences between the two. When installed, remote I/O is placed further from the main controller to be closer to the sensors and is connected via communication networks instead of direct wires. This results in higher data transfer and communication latency, the ability to operate in rough conditions, and more affordable maintenance costs over time. Local I/O is connected to sensors and actuators via direct wires and is very close to the main controllers. This leads to lower data transfer latency and easier, more affordable installation.
Acromag offers solutions for both remote and local I/O. Local I/O modules, or signal conditioners, can be directly integrated into control systems for centralized applications like small factories or specific areas of manufacturing plants. Remote I/O modules, such as ethernet I/O and fieldbus I/O, enable distributed I/O systems allowing for flexible placement across facilities like large manufacturing plants or field stations.
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