Node-RED: integración con IDM

Node-RED es una herramienta que permite crear flujos de datos y conectar múltiples elementos entre sí, de una forma visual. Está pensada para IoT. En esta entrada veremos como incluir objetos IDM en estos flujos.

Captura de pantalla de 2016-05-09 16-22-19

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RS-485 RRP (Round Robin Protocol)

The goal of IDM is to communicate devices that use different technologies. One of this network technology is RS-485, but it does not specify the means to send messages from any device on any time. This protocol tries to solve the problem.

Overview

Any RS-485 network has multiple devices using a master-slave paradigm (or in the RS-485 nomenclature, driver-reader). Only the driver can write on the bus, and all readers can read. Every node could became a driver, but there should be just one driver on the network at a given time.

RS-485 only describes the most low level layer, giving the network layer to be part of the application protocol. In this case, we have designed a protocol called Round Robin Protocol (RRP).

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