SCADA comes from Supervisory Control's initials And Data Acquisition.
what is it?
It is an application software of control of production, which one communicates with the field devices and controls the process of automatic form from the screen of the computer.
It provides information of the process to diverse users: operators, supervisors of quality control, supervision, maintenance, etc.
The systems of interface between user and plant based on control panels replete with luminous indicators, instruments of measure and push-buttons, are being replaced with digital systems that implement the panel on the screen of a computer.
The direct control is realized by the autonomous digital controllers and / or programmable automatons and is connected to a computer that realizes the functions of dialog with the operator, data processing and control of the production, using the SCADA
Basic scheme of a system of Acquisition, supervision and control
Main Functions
Acquisition of information, to gather, to process and to store the received information.
Supervision, to observe from a monitor the evolution of the variables of control.
Control, to modify the evolution of the process, acting well on the autonomous basic regulators (slogans, alarms, menus, etc.) directly well on the process by means of the connected exits.
Specific Functions
Transmission. Of information with field devices and others PC.
Database. Management of information with low times of access. It is in the habit of using ODBC.
Presentation. Graphical representation of the information. Interface of the Operator or HMI (Human Machine Interface).
Exploitation. Of the information acquired for management of the quality, statistical control, production management and administrative and financial management.
