Supervisory systems are responsible for communicating with second-level automation devices (controllers, dedicated acquisition hardware) with the u...

Supervisory systems are responsible for communicating with second-level automation devices (controllers, dedicated acquisition hardware) with the user, allowing for operation, acquisition, storage, as well as analysis and supervision of the process. Based on knowledge about supervisory systems, analyze the items below classifying them as true or false.

I - The operation principle of Human-Machine Interfaces in SCADA systems (Supervisory Control And Data Acquisition) is based on data acquisition from second-layer devices of the process (Controllers).
II - The HMI (Human-Machine Interaction) reads measurements from the controllers, plotting the values on graphs and frames, as well as sending gain parameterization and setpoints to the controllers, which in turn perform calculations and act on the process.
III - HMIs/SCADA can be developed using high-level programming, with the developer simply clicking, dragging screens, and creating communication tags between the virtual environment and real components available.
IV - In the SCADA system, only complex interfaces with graphics, history, and virtual replicas of the components used in the process can be created.
V - The disadvantage of using a supervisory system lies in the need for skilled labor to develop HMI interface screens. Select the alternative that corresponds to the correct statements:


a) I, II, and III.
b) I, II, III, and V.
c) Only I.
d) II and IV.
e) II, III, and V.