{"id":"io-link-safety","model_id":"IO-Link Safety","name":"IO-Link Safety","summary":"IO-Link Safety is a functional safety communication protocol that uses IO-Link as a black channel for safety-related data. It is standardized as IEC 61139-2 and supports applications up to SIL 3 over point-to-point IO-Link connections. IO-Link Safety Masters integrate the safety communication into higher-level systems, and mix mode allows safety-related and standard data to be transmitted at the same time.","study_notes":["IO-Link Safety uses IO-Link as a black channel for safety-related data.","Designed for IO-Link point-to-point communication; described as simpler than corresponding fieldbus safety protocols.","IO-Link Safety Masters take over implementation in higher-level systems.","Master ports can always be configured for IO-Link, enabling mixed standard and safety applications.","Safety Masters can offer ports configurable for OSSD sensors for migration from conventional technology.","Safety Devices may be operable with OSSD as well as IO-Link Safety.","Suitable for sensors, actuators and mechatronic components.","Mix mode transmits safety-related and standard data simultaneously.","IODD is used for parameterization and integration.","A Dedicated Device Tool is used for parameterizing safety functions; DTI is a standardized software interface."],"safety_notes":["Supports safety-related applications up to SIL 3.","Transmits safety-related data over IO-Link as a black channel.","Allows simultaneous transmission of safety-related and standard data in mix mode.","IO-Link Safety Masters can provide ports configurable for OSSD sensors.","Safety function parameterization requires a permanently assigned, approved Dedicated Device Tool for the device.","Standardized as IEC 61139-2."],"sources":[{"url":"https://io-link.com/technology/safety","title":"IO-Link Safety: Reliable Point-to-Point Communication","accessed":"2026-10-25"}],"verification":{"status":"source_checked","checked_at":"2026-10-25","values":3,"method":"llm_source_check"},"updated_at":"2026-10-25","type":"protocol","spec":{"transports":["other"],"architecture":"master_slave","encoding":"binary","default_ports":[],"data_types":[],"standard_body":"IEC","standard_ref":"IEC 61139-2","related":[]},"url":"https://machineschema.com/protocol/io-link-safety","license":"https://creativecommons.org/licenses/by/4.0/"}