IO-Link is a communication protocol used in industrial automation enabling efficient communication between sensors, actuators, and controllers in industrial systems. The primary goal of IO-Link is to provide a point-to-point communication interface for smart devices in the field, allowing for seamless integration into the overall control system. IO-Link enables communication between a master device (such as a PLC or controller) and individual sensors or actuators, creating a point-to-point connection. It allows for the exchange of digital data between devices, providing more information and flexibility compared to traditional analogue connections. IO-Link also allows for the configuration and parameterization of connected devices, making it easier to set up and manage automation systems. This protocol supports bidirectional communication, allowing for real-time data exchange, diagnostics, and monitoring of connected devices. A key feature of these IO-Link devices are that they are typically designed for easy integration, and the protocol supports plug-and-play functionality, simplifying the installation and replacement of devices. IO-Link is an international standard (IEC 61131-9), ensuring compatibility between devices from different manufacturers.