Principles: Standard resistance: using standard methods, equipment manufacturers in the selection of standard products. Reliability: as much as possible to increase fault tolerance anomaly detection system to improve system reliability; downtime is reduced to a minimum. Scalability: In the production process to meet the requirements of the premise, the expansion space (such as increasing the variety of ingredients, etc.). In fact, the control system from the 1940s began to be used, weighing control system, the early and late field base meter relay control system constitutes a predecessor. PLC and DCS represented quantitative control system, from 70 years since the beginning of the application, Xinyang control systems, access to rapid development in metallurgy, electric power, petroleum, chemicals, light industry and other industrial process control. From the beginning of 1990, has been found in the fieldbus control systems, PC-based control systems, etc., we will briefly introduce a variety of common control systems and to analyze the evolution and development direction of the control system. Xinyang weighing control system _ _ HTC environmental control system provided by the Xinxiang City Hongda energy saving equipment Limited. Weighing control system _ _ HTC environmental control system Xinyang Xinxiang City Hongda energy saving equipment Limited (www.xxhdjnhb.com) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Yu Jingli.