In an increasingly networked and automated industry, functional safety is more than just a regulatory obligation –it is a central component of modern automation concepts.
IO-Link is a worldwide standard for point-to-point communication between sensors, actuators, and controllers. With IO-Link Safety, the proven concept has been expanded to include certified safety-related communication on the same physical infrastructure and is certified by TÜV.
IO-Link Safety offers standardized wiring, reduced complexity, and consistent diagnostic capabilities, even for safety-relevant signals up to PLe/SIL3.
It combines the openness and flexibility of IO-Link with the stringent requirements of functional safety. Notably, the system is open, meaning the technology can be used across manufacturers and seamlessly combined with established safety protocols, such as PROFIsafe. Safety functions, such as emergency stops, door interlocks, and light curtains, can be implemented directly via IO-Link and safely connected to the control system without complex wiring.
This gives machine manufacturers and system operators more flexibility in planning, faster commissioning, and lower overall lifecycle costs. Maintenance engineers also benefit from improved device transparency and diagnostic capabilities –a clear advantage in times of digitalization.
IO-Link Safety is much more than a new protocol; it is a strategic enabler for the smart, safe factory of the future. Following the successful market launch of the first IO-Link Safety products, it is reasonable to assume that the number of safety nodes will grow as quickly as standard IO-Link devices.
The technology is ready. Now, it’s up to us to implement and use it.
Frank Moritz, SICK AG