Scada means Supervisory Control and Data Acquisition. Programs coded in Scada are used for controlling various industrial processes and complex equipments. There are various scada systems in use today. These are called MMI or man machine interfaces.
A master control unit runs the Scada programs that can control and analyze the data from various equipments. There are many ways by which communication takes place between the master control unit and the various devices. Ethernet, radio links and modems are widely used for the purpose.
Various communication interfaces are used due to which the data is transmitted in various forms. Thus converters have to be used for conversion of data. All the information reaches the central unit where it is processed and analyzed regularly.
All the information is stored in the central database. It is where all parameters of various equipments are continuously tracked and controlled. These can be modified if a read / write permission is provided to them. All the equipments located near or far, will have them monitored this way.
There are two types of parameters used. These are analogue or digital. The SCADA software fetches them continuously and stores them. The program can then makes its calculations based on all those stored parameters.
The calculations made by SACA program can then help in supervisory control and data acquisition. Modern Scada software shows you a graphical representation of various objects on the computer screen.
There can be graphs and bars showing various details about instruments like temperature, liquid level, pressure, etc. All these graphical details are based upon real time computation done by analyzing various parameters.
Advanced SCADA software also allows administrators to set up some functionality to alert them when any parameter reaches a certain value. Automatic SMS or email alerts can be set up. Thus a plant is controlled from a central location using SCADA systems. - 31403
A master control unit runs the Scada programs that can control and analyze the data from various equipments. There are many ways by which communication takes place between the master control unit and the various devices. Ethernet, radio links and modems are widely used for the purpose.
Various communication interfaces are used due to which the data is transmitted in various forms. Thus converters have to be used for conversion of data. All the information reaches the central unit where it is processed and analyzed regularly.
All the information is stored in the central database. It is where all parameters of various equipments are continuously tracked and controlled. These can be modified if a read / write permission is provided to them. All the equipments located near or far, will have them monitored this way.
There are two types of parameters used. These are analogue or digital. The SCADA software fetches them continuously and stores them. The program can then makes its calculations based on all those stored parameters.
The calculations made by SACA program can then help in supervisory control and data acquisition. Modern Scada software shows you a graphical representation of various objects on the computer screen.
There can be graphs and bars showing various details about instruments like temperature, liquid level, pressure, etc. All these graphical details are based upon real time computation done by analyzing various parameters.
Advanced SCADA software also allows administrators to set up some functionality to alert them when any parameter reaches a certain value. Automatic SMS or email alerts can be set up. Thus a plant is controlled from a central location using SCADA systems. - 31403
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