| OIS || An Operator Interface Station, performed the role of operator's station. |
It provides the processed information from the DPC in a variety of display.
| OPC Client/Server || Functions the Industrial standard OPC(OLE for Process Control) Client/Server for interface with other systems. |
| Web Client/Server || Provides the web monitoring service that allows remote monitoring from an office or other places far away from the main monitoring & control room. Also provides real-time plant monitoring and history data through an intranet or the internet. |
| CCS || A Central Control Station which can be applied as a stand-alone type that integrates DPC and WDC functions. |
It processes real-time and history data, and provides the plant monitoring and control functions.
| DPC || A Database Processing Center which is a station that manages and processes all the data in the system. |
It collects data from on-site controllers, such as RCS, creates the database, and then processes, stores and manages it.
| PHS || A Plant History System which stores the long-term operation information and history data, and provides analysis to improve efficiency of the plant operation. |
| Alarm Server || Collects and stores for a long period of time the information of various on-site process alarms and controller alarms that occurred in a critical process, such as a power plant. |
| EWS || An Engineering Work Station which creates, modifies, and saves the engineering data required to operate the whole system. |
| SOE || Sequence of Event. In case a major system of a power plant or a critical process trips, it collects the digital point status information once every 1/1000 second and outputs them to a printer to analyze the event and its cause. |
| RCS || A Remote Control Station which directly controls a plant according to the program prepared in EWS. By making all or any of control, power supply, communication, I/O parts redundancy, it can configure the system to be appropriate for specific use of each critical PA process or turbine control. Especially, it can configure a station specialized for a turbine control system which requires high-speed (less than 5msec) control performance. |