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)
Resumen
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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