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 functions, represents 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 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access