Supervisory Control and Data Acquisition (SCADA) uses Programmable Logic Controllers (PLC) to electronically control and monitor production machinery. Many manufacturing companies have installed a PLC on their production machines. Abasys Visual SCADA provides all the facilities needed to create any level of industrial automation, monitoring and control. This provides a single automation software solution interface with outstanding features and a scalable architecture that will grow with your requirements and protect your initial investment.  Abasys Visual SCADA is shipped with OPC Server. Using OPC standards, data can be transmitted from SCADA source to any OPC-compliant application including HMI, data historians, spreadsheets, and databases which makes it a complete plug and play communication solution.

This software is in use since 2002 in the Technical University of Varna, Bulgaria, Automated Systems Department.

A graphic CAD medium has been worked out which enables the design of an optional system for modeling, control and supervision for processes and signals through previously built units. Each unit consists of a different number of inputs and outputs and contains a certain function-mathematical dependence, connection with external devices, and visualization of signals on computer display. The units are grouped into libraries according to their function. Each input/output can be of a different signal type – floating point signal (continuous analogue signal) and digital signal. The type of signal is recognizable according to its color. The system doesn’t allow any loop connection of different type signals. A big number of unit inputs can be connected in one loop. But the system doesn’t allow the connection of several outputs. A hardware module has been worked out leaving 4 analogue inputs and an analogue output for connection with the outer interface.