Supervisory Control and Telemetry Using Emulation-Type Microcomputer

Abstract

An advanced Supervisory Control and Telemetry system has been developed to meet the diversified requirements from the widening range of application fields such as utility industries, highways and railways. The transmission procedure employed is Cyclic Digital Transmission (CDT)a procedure most widely adopted in Japan, especially in the electric power control field. The master station possesses the capability of accomodating equivalently as many as 32 remote stations linked over 1200 b/s carrier channels on a realtime basis. This processing power has been achieved by the use of an emulation-type microcomputer, into which a specially developed set of microinstructions are incorporated as part of firmware to get the optimal tradeoff between hardware and software.