Distributed control of network devices with remote terminal units

One of problems in industries is an installation for an automation system device such sensor, transducer, controller and so on those are located in different areas. Such problem makes a difficulty for maintenance and installation. The aim of this research attempts to design a high performance controller with remote devices. One attractive is to group near devices in near place together to centralizes control. This paper presents the operating program and network device groups distributed through digital and analog remote terminal unit (RTUs). Such devices are centralized by computer control and communicated with similar protocol through serial bus. Our scheme, there are many advantages such as, saving both time and cost, convenience compared to other ways