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In China, there is now a growing desire to use the IEC60870-5 standards to communicate between telecontrol stations via Internet services in power telecontrol systems. A companion standard called IEC 60870-5-104 has been published by the IEC for this purpose. At present, people make a deep study of the application of the 104 protocol and have obtained a certain success. But on the software design, there is not a relatively universal design pattern. This paper puts forward a kind of design method used for the realization of the IEC 60870-5-104 protocol based on finite state machines (FSM). In this method, the IEC 60870-5-104 protocol is modeled via the FSM theory. In addition to that an object-oriented FSM implementation framework is produced. And a tool is presented that automates the configuration of the framework. The tool effectively enables developers to create FSMs from a specification.
Date of Conference: 6-7 April 2009