Specifications include, but are not limited to: a. Display Requirements: Displays shall contain any combination of real-time and trended graphic and tabular information, including time and date. A display shall contain any combination of monitored data from all meters. b. Display Editor: The display editor shall enable an operator with proper password to create, modify, and delete displays. The primary use shall be for adding and modifying one-line diagrams, station status displays, system summaries, and system directories, as field equipment or new data are added. c. Access Control: The system shall include software security provisions to prevent inadvertent or unauthorized change of the password. The password shall not be displayed or printed. d. Trending: Any monitored or calculated value shall be trendable. Each data trend file shall retain a minimum of 500 data samples. The time rate of sampling shall be selectable on an individual trend basis.
