IO-Link is a short distance, bi-directional, digital, point-to-point standard industrial communication protocol connecting intelligent sensors and actuators with control system.

By increasing machine efficiency and flexibility, it reduces costs, minimizes startup times, and boosts productivity.

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Created for Smart Factories

The IO-Link protocol, a fieldbus-independent communication standard, was collaboratively developed with PLC manufacturers, sensor manufacturers and software providers, to meet the needs of industry 4.0.

It offers an universal solution for the future, designed to be compatible with existing technologies for seamless device integration and data access.

With IO-Link, even basic sensors and actuators can provide process values, identification, and diagnostic data throughout the entire asset structure. This enhances machine flexibility, enabling opportunities for preventive maintenance and supervision.

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Benefits of IO-Link Technology

Diagnostic functions ensure reliable condition monitoring, preventive maintenance, and optimization of maintenance planning. The service technician can utilize remote diagnostics, reducing the workload for troubleshooting and repairs. Manufacturer-specific event codes offer informative insights into product-specific diagnostics, such as detecting dirty lenses on photoelectric sensors.

By using standard three-core or five-core unshielded cables with M12 connectors, IO-Link simplifies and reduces wiring, while also saving costs through preventive maintenance.

IO-Link devices are easily configured through the control system, identified with the localization function, and maintained as necessary, minimizing downtime. Integrated data storage facilitates sensor replacement during operation, contributing to increased plant availability.

Transparency allows for reliable sensor identification and access to all levels of process data, diagnostics, and device information. This minimizes the likelihood of failures and optimizes maintenance planning. Built-in devices are identified via their serial number.

Explore IO-Link Features

IO-Link reduces wiring, increases data availability, enables remote configuration and monitoring, simplifies device replacement, and provides extended device diagnostics.

IO-link use case 3

All Version 1.1 IO-Link devices include a data storage function, streamlining sensor replacement for added convenience. Process-specific device parameters are stored in both the device and IO-Link master, allowing sensors to be replaced during operation without the need for new parameterization.

Compliant with IEC 61131-9, the IO-Link cross-vendor open interface is universally compatible with any fieldbus. Maintenance and commissioning are simplified through Standardized Smart Sensor Profiles, applicable across manufacturers and sensing technologies.

In case of sensor maintenance or replacement, the integrated localization function simplifies identification within the plant. Utilizing specific sensor parameters, the control system directs the search for the identified sensor, which responds with a flashing LED. Enhanced plant transparency, right down to the sensor level, results in improved process performance.

IO-Link enables better accessibility to system, devices, and data, which will in turn increase production efficiency. Sensors have additional functions, providing not only process data, but also service data and events data as well. IO-Link protocol enables sensors to transfer larger quantities of data and connects them to the cloud. Step into the world of digitalization by connecting your sensors to the cloud.

Seamless Configuration and Integration

The IO-Link system comprises an IO-Link Master and one or more IO-Link Devices, i.e., Sensors or Actuators. A digital point-to-point connection between them enables the acquisition of sensor status data irrespective of signal type or sensor brand.

The Master processes digital signals and interfaces with the higher-level controller or PLC. Master-PLC communication occurs using the fieldbus protocol. Additionally, the Master supports various protocols (PROFINET, Ethernet/IP, and Modbus TCP), allowing the flexible integration of sensors and actuators into existing infrastructures.

Configuration is achievable with just a few mouse clicks using remote access. Sensor settings can also be easily copied and duplicated.

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Open the doors for Industry 4.0 and IIoT

IO-Link is unlocking the possibility of the Industrial Internet of Things (IIoT) and Industry 4.0. Connecting to the cloud enables better accessibility to system, devices, and data, thereby increasing production efficiency.

Modules are designed to endure challenging industrial conditions, utilizing standard 3-wire (Class A) or 5-wire (Class B) unshielded cables and using M12 connectors to connect to IO-Link devices. These modules can be installed directly in the field, eliminating the need for a cabinet.

IO-Link is endorsed by a diverse range of manufacturers, e.g., Leuze, Turck, and Unitronics, all providing an extensive array of IO-Link devices. It is also possible to plug and read non-IO-Link devices.

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