IO-Link

IO-Link, as defined by the IEC 61131-9 standard, is a point-to-point communication protocol used in industrial automation processes. It enables bi-directional communication between sensors and actuators and a central controller, typically a PLC. This digital communication standard operates over short distances via a three-wire cable, with the capability to transmit both digital signals and analog values. 

The protocol’s versatility allows it to integrate with existing systems, supporting various industrial communication standards like PROFINET, Profibus, and Modbus. The IO-Link Master serves as the intermediary between field devices and the automation system, with each port on the master enabling a point-to-point connection to an IO-Link Device. Unlike fieldbus systems, IO-Link simplifies device integration, maintenance, and diagnostics.

The Basics of IO-Link Protocol 

At its core, IO-Link is a simple, point-to-point connection that doesn’t require complex configurations. It enhances the capabilities of standard sensors and actuators by providing them with digital communication abilities. This technology is designed to function with existing three-wire sensor and actuator systems, making it accessible and easy to integrate into current setups.

How Does IO-Link Work?

The IO-Link Master acts as a gateway between the field devices and the control system. It can connect to various sensors and actuators, each equipped with an IO-Link interface. These devices communicate their status and diagnostics back to the master, which then relays this information to the central control system.

Unlike traditional analog signals, which can degrade over distance or be affected by electrical noise, IO-Link uses digital signals. This ensures that data integrity is maintained from the sensor to the control system. The digital nature of IO-Link also allows for more complex data to be communicated, such as configuration parameters, identification data, and process data.

One of the standout features of IO-Link is its ease of integration. It can be incorporated into existing automation systems with minimal disruption. Since it uses standard cables and connectors, there is no need for specialized hardware. 

IO-Link with CoreTigo 

CoreTigo is the leader in IO-Link Wireless technology that offers robust solutions for industrial automation. Its devices leverage the power of the IO-Link protocol to provide enhanced connectivity with wireless solutions. 

IO-Link Wireless eliminates the need for complex cabling, making it easier to deploy and maintain devices in hard-to-reach or mobile applications. Industrial wireless masters and devices are designed to offer the same reliability and performance as wired IO-Link solutions.

Application in Industrial Settings

In industrial settings, CoreTigo’s technology can be used to connect various sensors and actuators to the central control system without the need for extensive wiring. This is beneficial in environments where mobility and flexibility are crucial, such as robotic end-of-arm tooling.

Learn more about CoreTigo’s industrial wireless solutions.