PLC - VIRTUAL INSTRUMENT INTERACTION USING THE OPC UA STANDARD FOR IIoT APPLICATIONS IN INDUSTRY AND REMOTE EDUCATION (INTERACCIÓN PLC - INSTRUMENTO VIRTUAL USANDO EL ESTÁNDAR OPC UA PARA APLICACIONES DE IIoT EN LA INDUSTRIA Y EN LA EDUCACIÓN REMOTA)

Luis Gerardo Carvajal Fernández, José Luis Vázquez González

Resumen


Abstract
Industrial Internet of Things (IIoT) offers connectivity and information access for industrial devices. However, several devices cannot implement it because of being TCP/IP-incapable or having incompatible communication protocols. The OPC UA standard can be a solution by offering a platform-independent client-server communication model. The goal of the current work is to use OPC UA to connect a Programmable Logic Controller (PLC) in S7-PLCSIM and a Virtual Instrument (VI) in LabVIEW running as a Web Services application to enable applications in industry and remote education. The case study is a SCADA system simulated in FluidSIM. The results show a successful connection and demonstrate that the OPC UA standard can be used for implementing IIoT by connecting a simulated PLC to a VI for bidirectional information exchange in monitoring and control tasks. The former enables students to learn interactively and remotely about PLCs, and industries to improve their process control.
Keywords: Industrial Internet of Things (IIoT), OPC UA, Programmable Logic Controller (PLC), Virtual Instrument (VI).

Resumen
El Internet Industrial de las Cosas (IIoT) ofrece conectividad y acceso a información para dispositivos industriales. Sin embargo, muchos dispositivos no pueden implementarlo por falta de capacidades TCP/IP o por protocolos de comunicación incompatibles. El estándar OPC UA puede ser una solución por su modelo de comunicación cliente-servidor independiente de plataforma. El objetivo del trabajo es usar OPC UA para conectar un Controlador Lógico Programable (PLC) en S7-PLCSIM y un Instrumento virtual (VI) en LabVIEW corriendo como una aplicación de Servicios Web para habilitar aplicaciones industriales y en educación remota. Se estudia un sistema SCADA simulado en FluidSIM. Los resultados muestran una conexión exitosa, demostrando que OPC UA puede usarse para implementar IIoT conectando un PLC simulado a un VI para intercambio bidireccional de información en tareas de monitoreo y control. Esto permite a estudiantes aprender interactiva y remotamente sobre PLCs, y a industrias mejorar su control de procesos.
Palabras Clave: Controlador Lógico Programable (PLC), Instrumento Virtual (VI), Internet Industrial de las Cosas (IIoT), OPC UA.

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Referencias


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