OVATION DCS system learning

Ovation distributed control system network is composed of mutually redundant network, data exchange station, operator station, engineer station, history station, controller and other nodes. }Workstation: According to the different functions of the station, it is divided into several different functional stations, including: database server DB, engineering server EWS, operator station OWS, historical report station OPH, other function stations OPC, etc. } Controller: As a control center, the controller adopts a redundant method to achieve maximum reliability and safety. The controller uses a PC-compatible real-time operating system (full 32-bit priority multitasking system), as well as a standard PC structure and a passive PCI/ISA bus interface.

System capacity 100MB expressway, each network has a maximum of 254 stations, and each network has 20w points. Speed: 100MB/s Capacity: 20W real-time points/second Medium: (Ovation network)/Unshielded twisted pair (UTP)}Network topology: Star topology}Each network length: 200KM}Support synchronous and asynchronous communication Method} The industrial TCP/IP protocol is fully compatible with Ethernet. Operator station-complete the daily operation of the system} Server / engineer station-database and configuration tools} History / report station-historical data collection and report configuration and generation} OPC station-third-party system data connection

1. All workstations can access the database and modify its content, but the permissions of the workstations are restricted due to the nature of the work.

2. Both the database server and the history station are equipped with large-capacity hard disks. One is used to store database files in offline state, and the other is used to store historical file information. If the database server is broken, all workstations can still operate normally, but cannot access the database files and modify the content; if the history station is broken, the historical information during this period of time cannot be collected, and real-time information can still be observed and collected.

3. The history station collects information about historical points, not all points. You can add the desired point as a historical point through the software.