Industrial Cybersecurity

The monitor function

The monitor function is often part of a control loop, such as the automation behind keeping a steady level in a tank. The monitor function will keep an eye on a critical value, such as pressure, temperature, level, and so on, and compare the current value against predefined threshold values, and alarm or interact depending on the setup of the monitoring function. The key difference between the view function and the monitor function is in the determination of deviation. With monitoring functions, this determination is an automated process, whereas with a view function, this determination is made by a human looking at the values. The reaction of the monitor function can range from a pop-up alarm screen to a fully automated ...