It is becoming more and more difficult to operate mineral and metal processes profitably, as operating costs rise, quality demands in- crease, international competition becomes more fierce and Government charges remain at their current levels. Profitability today depends upon efficient operations, which can only be achieved through precise and dependable con- trol of each process unit comprising the total plant._x000D_
Modern process control systems utilise distributed architecture with microprocessor- based controllers, data acquisition devices and VDU operator stations. Honeywell intro- duced this control technology in 1975 with the "Total Distributed Control" System. Now, building on the proven performance and re- liability inherent in TDC hiway modules, Honeywell has extended the TDC system to inte- grate both management information and control by providing distributed processing modules on the new TDC 3000 Local Control Network (LCN).