Difference between local and remote input/output

Industrial input/output (such as Allen Bradley 1746-NI8 Analog INPUT Module, B&R X20DI2377 Digital Input Module. Siemens 6ES7331-1KF01-0AB0 Analog Input Module) modules are key industrial network components that transmit input signals from field devices such as sensors or actuators to controllers. These modules then route the output commands from the controller back to the device. Although it seems simple and straightforward, decisions about how to deploy I/O modules on an industrial network become more complex when you consider the remote and local I/O options available

Local I/O is a term used to refer to an I/O module that resides in the same rack or enclosure as the controller, and because of its proximity to the controller, typically does not have any computing power on board.

Distributed or remote I/O is usually deployed in a different location than the main controller. Therefore, distributed input/output typically has some computing power to perform data processing, as well as the ability to turn the output on and off independently of the main processor.

To get a I/O part,get in touch with Vivi (sh_plc@163.com).