Desarrollo de una interfaz hacia el protocolo iec 870-5 para una unidad terminal remota de una unidad terminal remota de un sistema scada.

Abstract

This document explains the design and the details of implementation of a protocol converter device for a SCADA system. Specifically, it was designed to make possible the connection between a remote terminal unit (RTU) which uses Modbus protocol to an IEC 870-5-101 based SCADA system

This converter device was developed on an evaluation board based on the Motorola HC12 microcontroller. It includes the software required to poll the remote station and report the state and values of the devices located on the remote, and the changes on then to the master station; it also executes required commands from the master station on the remote station A prototype was built and successfully tested. However, improvements can be made to optimize its functionality and performance.