IO-Link is an open-source communication protocol that provides a two-way, digital connection between field devices (such as measuring devices, switches, and actuators) and industrial control systems (like PLCs). It operates on a point-to-point architecture, where an IO-Link master controls the communication with multiple IO-Link devices. For specific use cases within process automation, IO-Link offers numerous benefits, making it the protocol of choice in simpler measurement scenarios.
Benefits of IO-Link technology
Simple device communication: Ideal for sensors (measuring devices and switches) and actuators for compact applications (e.g. temperature, pressure, flow or level measurement).
Cost-effectiveness: Budget-friendly choice for simple applications requiring numerous field devices.
Ease of integration: Simple to set up and integrate into existing automation systems without extensive reconfigurations.
Diagnostics and parameterization: Remote configuration, diagnostics, and monitoring reduce manual intervention, minimize downtime, and facilitate preventive maintenance.
Accelerate time to market and optimize production workflows by leveraging IO-Link’s standardized communication. Ensure compliance with food safety and quality regulations through seamless access to all relevant documentation and certification via IO-Link-enabled devices.
Consistent asset management through IO-Link’s automatic device identification and parameterization for true plug-and-produce functionality.
Simplified integration and rapid commissioning thanks to the IO-Link Integration Support Package offered by Endress+Hauser.
Water distribution process in a biopharmaceutical plant.
Application example: Life Sciences
Controlling critical parameters for water purification & distribution
Pharmaceutical water is a critical utility in drug manufacturing, requiring strict quality assurance and regulatory compliance. IO-Link-enabled instrumentation ensures continuous monitoring and control of critical process parameters across the entire water system – from treatment and purification to distribution and point of use. Our IO-Link-compatible portfolio supports real-time data acquisition and seamless integration, regardless of plant size.
Standardized and streamlined operations with a scalable range of IO-Link-capable process and quality control instruments.
Fully compliant with ASME BPE, ISPE guidelines, and global pharmacopeias.
Simplified digital integration via the Endress+Hauser IO-Link Integration Support Package, industrial Ethernet, and cloud-ready connectivity.
Enabled predictive, data-driven calibration strategies that reduce downtime and optimize maintenance intervals.
Get the maximum out of IO-Link in your industry
IO-Link technology is already very popular in the field of factory automation. Learn more about process industry specific use cases, that are equally relevant for OEM customers and their end users, in our whitepapers.
Food & Beverage
In this whitepaper, we explain how you can use IO-Link in your food and beverage applications such as pasteurization, brewing, or packaging.
Why choose IO-Link technology from Endress+Hauser?
Choosing IO-Link technology from Endress+Hauser ensures you receive superb and extraordinary device quality for process automation, a level of excellence rarely found in the IO-Link device class. Our technology boasts a high level of interoperability with third-party IO-Link masters and configuration software, thanks to the deep implementation of the latest Smart Sensor Profile Specification. Additionally, we offer the integration of other system components locally upon request. By choosing Endress+Hauser, you benefit from a wide range of services throughout the entire lifecycle of your devices, with the same high-quality support provided for our premium products. Our devices also feature fast and easy integration into leading process control systems, complete with a full function block library for Siemens TIA Portal and a comprehensive add-on instruction library for Rockwell Plant PAx. More about integration for Siemens and Rockwell Automation here.
The combination of Endress+Hauser IO-Link devices for simple measuring points with Ethernet-based Endress+Hauser instruments for critical measuring points in process automation provides an excellent basis for achieving maximum benefit from digitalization.
Endress+Hauser has selected carefully a portfolio of IO-Link and PROFINET, EtherNet/IP devices to serve best.
Enhancing IO-Link with advanced protocols
While IO-Link excels in providing efficient, two-way digital communication for field devices, it is important to recognize that IO-Link is optimized for simpler measurement scenarios and factory automation, where discrete sensors and basic data throughput are sufficient. However, for high-bandwidth, real-time, or complex applications, IO-Link alone may not meet all requirements and should be integrated with other protocols. This hybrid approach allows manufacturers to leverage the simplicity and cost-effectiveness of IO-Link for basic sensors while utilizing more powerful protocols for complex devices and control systems.
