SCADA Component: 
Central Monitoring Station (CMS)

The Central Monitoring Station (CMS) is the master unit of the SCADA system. It is in charge of collecting information gathered by the remote stations and of generating necessary action for any event detected. The CMS can have a single computer configuration or it can be networked to workstations to allow sharing of information from the SCADA system.

A Man-Machine Interface (MMI) program will be running on the CMS computer. A mimic diagram of the whole plant or process can be displayed onscreen for easier identification with the real system. Each I/O point of the remote units can be displayed with corresponding graphical representation and the present I/O reading. The flow reading can be displayed on a graphical representation of a flowmeter. A reservoir can be displayed with the corresponding fluid contents depending on the actual tank level.

Set-up parameters such as trip values, limits, etc. are entered on this program and downloaded to the corresponding remote units for updating of their operating parameters.

The MMI program can also create a separate window for alarms. The alarm window can display the alarm tag name, description, value, trip point value, time, date and other pertinent information. All alarms will be saved on a separate file for later review.

A trending of required points can be programmed on the system. Trending graphs can be viewed or printed at a later time. Generation of management reports can also be scheduled on for a specific time of day, on a periodic basis, upon operator request, or event initiated alarms.

Access to the program is permitted only to qualified operators. Each user is given a password and a privilege level to access only particular areas of the program.. All actions taken by the users are logged on a file for later review.