In the era of the Industry 4.0 explosion, controlling PLCs over the internet has become an essential focus in modern industrial automation systems. This facilitates flexibility and globalization in production management and brings outstanding benefits in operational efficiency, security, and data management. With its remote connectivity and control capabilities, this technology is gradually reshaping the operational dynamics of factories and manufacturing enterprises, enhancing global competitiveness and meeting the increasingly high demands of the modern market. This article presents the results of research on building a control model to monitor a remote PLC controller via the internet on the Node JS platform.