Abstract
The paper describes system synthesis and architecture of a multilayered distributed SCADA/HMI system. The system is used for monitoring and control of refinery terminals for truck loading and oil products pipeline shipping. Network-centered, distributed PLC system with SCADA functions and several levels of fieldbuses, interconnected with the HMI part of the system is described first. Following is a brief description of the software tools used in the system design. Configuration and PLC controllers programming, data server configuration, operator panels design and way of managing the control system using a standard Web browser, e.g. Internet Explorer, are addressed. After examining the way specific customization is done, the paper focuses on establishing the link with icons on graphic panels that integrates all three levels of process control from Operator’s panels.
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