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Architecting the Industrial Internet by Carla Romano, Robert Stackowiak, Shyam Nath

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Control domain

The control domain consists of functions performed by industrial control systems and are typically performed in closed loops, for example, constantly reading temperature and pressure and opening a valve when they exceed a defined limit. Figure 2.5, Control domain functionsrepresents a typical control domain; however, the specific functions may vary depending on the industry and system.

The control domain typically consists of sensing functions and actuation. The sensing function reads data from sensors and may span hardware, firmware, device drivers, and software elements. The actuation function writes data and controls signals to an actuator to perform an actuation.

The third important function in the control domain is communication ...

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