“…Ancillary processes, including controller computations or real-time control logic, are handled by modules that are coupled to field sensors and actuators. The SCADA concept shown in Figure 2 was devised as a versatile method for remote access to various local control modules, regardless of their manufacturer, and enabled access using standard automation protocols [21,22]. Large SCADA systems have evolved to closely resemble DCS in terms of functionality, employing various methods to interact with the plant.…”