Control system strategy: Industrial controllers integrate functions, connect to the enterprise

摘要

When designing controls, engineers can use multiple controllers: a programmable logic controller for discrete applications, a motion controller for motion applications, and a distributed control system for process applications. Or, with advancements in controller technology, these control functions can be managed in one integrated control platform. A backplane providing a high-speed communication path allows multiple processors, networks, and input/output (I/O) devices to be mixed without restriction in one chassis. Modern programmable automation controllers (PACs) use a producer/consumer model, which enables any device on the network to "produce" information for multiple "consumers," or devices.