14-09-2017, 12:09 PM
SCADA is a control system architecture that uses computers, network data communications and graphical user interfaces for high-level management of process monitoring, but uses other peripheral devices such as programmable logic controllers and discrete PID controllers. plant or process machinery. Operator interfaces that allow the monitoring and issuance of process orders, such as controller set point changes, are handled through the SCADA monitoring computer system. However, real-time control logic or controller calculations are performed by modules connected in network to field sensors and actuators.
The SCADA concept was developed as a universal means of remote access to a variety of local control modules, which could be from different manufacturers allowing access through standard automation protocols. In practice, large SCADA systems have grown to become very similar to distributed control systems in function, but using multiple means of interfacing with the plant. They can control large-scale processes that can include multiple sites and work over large distances. It is one of the most commonly used types of industrial control systems, however, there are concerns about SCADA systems that are vulnerable to cyberwar / cyberterrorism attacks.
The SCADA concept was developed as a universal means of remote access to a variety of local control modules, which could be from different manufacturers allowing access through standard automation protocols. In practice, large SCADA systems have grown to become very similar to distributed control systems in function, but using multiple means of interfacing with the plant. They can control large-scale processes that can include multiple sites and work over large distances. It is one of the most commonly used types of industrial control systems, however, there are concerns about SCADA systems that are vulnerable to cyberwar / cyberterrorism attacks.