PM511V16 3BSE011181R1 控制模块 ABB DCs has an extremely important position in the field of continuous control. So far, there have been many debates on the future development of DCs, but the following issues are the problems that most people think DCs need to solve urgently;
Openness. Regarding openness, this problem is a big factor that restricts the development of dcs. Since dcs manufacturers take strict security measures for their own network protocols and system software, this will cause if other manufacturers’ plc or other control equipment It is impossible to seamlessly access the dcs control system. It often needs to undergo complex protocol conversion, and the communication rate and communication capability obtained are not ideal. For example, the tps system of honeywell company and the plc of the plc5 series of ab company Communication needs to be realized through the serial port and auxiliary equipment developed by both parties for communication. However, when the communication volume is large, its real-time performance is greatly reduced. This problem hinders the application field and competitiveness of dcs. At present, some dcs manufacturers have realized the seriousness of the problem. At present, the pks control system mainly promoted by honeywell company adopts the communication network of controlnet, abandons the traditional lcn network, and adopts the form of server structure, which greatly enhances its openness. . In addition to communication problems, the operating system, database, man-machine interface, configuration of control strategies, etc., all have open problems. Therefore, with the advancement of technology, the openness of dcs needs to be gradually strengthened, and its characteristics should be brought into play to make the DCS open. The decentralized computer control system is freed from the traditional dcs, so that the dcs and the scheduling layer, management layer, and decision-making layer (auxiliary decision-making layer) of the cips system are seamlessly connected, and the relevant information of the dcs is uploaded to make its real-time database, historical The database is shared by the above-mentioned three layers, avoids repeated database construction, builds a platform for advanced control and optimization, shares data with the upper-level relational database, and truly realizes the integration of management and control.
PM511V16-3BSE011181R1
PM511V16-3BSE011181R1
