A new type of information and control system has been postulated recently, in which the customer satisfaction of individual has much more importance. The trend has come about through a user business process reengineering for meeting the variable customized requirements adaptively and promptly, which has required the information processing and real-time control with extreme efficiency and flexibility. The recent customer-driven manufacturing system is one of typical examples. Such system is expected to consist of open components such as not only work stations(WS), personal computers(PC) and open networks like Ethernet but also controllers, intelligent devices and field networks.The network protocols based on ADS concept have been already adopted in some organizations for the standard of open manufacturing system, which has made it possible to realize the information and control systems of real industry world.