Shady Yehia

latest from Shady Yehia

Figure 5: The interface relay base, or socket, shown in green, provides the connections to the coil and contacts of the relay. The actual relay, shown in white, contains the coil and contacts, which provide the switching function needed. Courtesy: Shady Y

PLM, Control Design

Journey to the center of the plant: SCADA returns system information to sensors, process tools

SCADA servers are responsible for core SCADA functions such as data communication with the control hardware (either directly or via an OPC server), graphics creation, alarm generation, security, data storage, reports generation, and other vital functions.

DCS, SCADA, Controllers

Journey to the center of the plant: SCADA software and tags

Figure 3: Example of SCADA connectivity after OPC technology. Courtesy: Shady Yehia

DCS, SCADA, Controllers

Journey to the center of the plant: SCADA systems information flow

Figure 1 shows a SCADA information journey overview. Courtesy: Shady Yehia, The Control Blog

DCS, SCADA, Controllers

Journey to the center of the plant: SCADA systems and the big picture