Scada Basics You Need To Know
Scada has been in extensive use for a lot of time now. Its full form is Supervisory Control and Data Acquisition. It is being used to control and analyze all types of industrial systems. MMI or man machine interfaces are the widely used scada systems worldwide.
These are managed via a central computer that can guide various devices connected to it. Many methods are used for communication between the master and the other devices. The most commonly used ones are Ethernet, radio links and modems. The data about various devices is gathered with the help of sensors.
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.
A central database is maintained. Various parameters of the SCADA controlled instruments can be accessed and these can also be changed if there is a read / write permission for a device. So the central database and master unit help control various parameters of instruments.
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.
Then the results obtained after making calculations are interpreted graphically. These are then shown on the computer screen as bars and charts. All this helps SCADA maintain its supervisory control easily.
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.
Additional software modules are available that will let you email or SMS yourself whenever a parameter passes a certain value. Thus SCADA systems can help maintain large scale plants having complex equipments.
Tagged with: business • Business Online • computers • electrical • electronics • industrial • internet • machines • maintenance • networking • scada • Security • software • technology • training
Filed under: Business Online
Like this post? Subscribe to my RSS feed and get loads more!
