Problems of building terminal and computer networks in nuclear power plants

The problem area is discussed of the building of computer networks in Czechoslovak nuclear power plants. The diversity of used computer technology in existing nuclear power plants is one of the biggest problems in the application of any model of local computer network in a nuclear power plant. Large-scale terminal networks are therefore being built. There are no problems with incorporating SMEP computers in terminal networks. The possibilities are characterized of connecting local computer networks with the open sector computer network. In this respect there remains the problem of the local bus to which various types of computers are connected. A special communication module was developed for the use of the TNS microcomputer which serves as a batch terminal. The DAVCO service program is designed for providing the interface between operator and communication program such as not to put great demands on the operator. It allows the operator to give 10 types of commands which can be modified using operands. (Z.M.)