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The present research work shows the development and implementation of a communications protocol of superior layers, which considers the layers session, presentation and applications, which will be transported through any Ethernet frame. This protocol has the primary objective to monitor and control the communication of the nodes belonging to the HAN network (SmartGrids) in a non-invasive physical layer level, using existent data networks where the proposed protocol will co-exist. This work will begin with a brief definition of the SmartGrids and HAN networks concept, to go on with an explanation of the theoretical development of the protocol, and ending with the implementation and brief traffic analysis which will show the functioning of the protocol. [ABSTRACT FROM AUTHOR]

The foundation of a research project about a model of computer networks with media access control mechanism based on the IEEE standard 802.3-2005 is presented. The model draws from the theory of self-similar sets for establishing the impact level that the long-range-dependent temporary correlations have on the performance of such networks. A new method for the estimation of self-similar levels based on a variation of the Whittle estimator is postulated. [ABSTRACT FROM AUTHOR]

In the present work an electronic device that sends and receives information with compatible parameters by the present data networks was developed and implemented, its operation uses RJ-45 physical interface of Ethernet protocol to convert by means a Duplexer module (WDM), electrical signals in optical signals and vice versa for transport on a single optical fiber thread offering a high efficiency degree in transmission quality and/or reception of the information and use of resources; the implemented prototype showed in the link tests made extreme clarity and fidelity; in addition to other advantages like expansibility, scalability, versatility, portability, low volume of installation and reduction of connections quantity. [ABSTRACT FROM AUTHOR]

This paper describes the development of a system for monitoring, control, and data acquisition of several process controllers from any computer with internet conecction by means of both different physical media (Ethernet, RS232 y RS485) and communication protocols (Modbus/TCP, Modbus, and ASCII protocols). Basic concepts about Modbus/TCP protocol are presented. This particular application solved a problem at the automatic control laboratory at Universidad del Valle. [ABSTRACT FROM AUTHOR]