초록 ▼

A plant management system is provided. The system includes one or more digital process control and data acquisition subsystems and a plant control network. Each control subsystem includes a data highway, and process control, and process interface units. The plant control network is a token-passing d

A plant management system is provided. The system includes one or more digital process control and data acquisition subsystems and a plant control network. Each control subsystem includes a data highway, and process control, and process interface units. The plant control network is a token-passing distributed plant control network in which a plurality of physical modules communicate with one another over a plant control bus. While there are limited number of different types with each type having different functions, all physical modules have common units, one of which is a module central processor unit. Both the number of modules and the number of types of modules of a plant control network have both a maximum and a minimum. Reliability of the plant management system is improved by a provision for redundancy at the physical module level. One type of physical module provides data communication and translation facilities between the plant control network bus and the data highway of a control subsystem. Another type of module provides a universal operator station at which is available all information and capabilities needed by an operator to operate a plant.

대표청구항 ▼

A plant management system, comprising: a digital process control and data acquisition subsystem including process controller and process interface units and a data highway, said units communicting with one another by means of the data highway; and a token-passing plant control network, said network

A plant management system, comprising: a digital process control and data acquisition subsystem including process controller and process interface units and a data highway, said units communicting with one another by means of the data highway; and a token-passing plant control network, said network including: communication bus means; a plurality of module means of differing types communicating with one another by transmitting and receiving binary signals over the bus means; one type of said module means providing communication between modules of the control network and units of said subsystem utilizing the data highway of said subsystem; and a second type of said module means providing a plant-wide operator control station.