{"id":"profinet","model_id":"PROFINET","name":"PROFINET","summary":"PROFINET is an industrial Ethernet standard for exchanging data between controllers and field devices such as drives, I/O and robots. Cyclic process data travels on a real-time channel, and configuration and diagnostics use standard IP communication. It is maintained by PROFIBUS & PROFINET International (PI).","study_notes":["Three conformance classes build on each other: CC-A (standard Ethernet, basic functions), CC-B, and CC-C (deterministic, isochronous transmission).","RT (real time) carries process data. IRT (isochronous real time) is for motion control and needs hardware support in the device.","Devices must be certified by an accredited PI Test Laboratory.","Cyclic RT process data travels directly on Ethernet layer 2; this registry lists only the UDP ports IANA assigns."],"safety_notes":[],"sources":[{"url":"https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=profinet","title":"IANA Service Name and Transport Protocol Port Number Registry","accessed":"2026-10-25"},{"url":"https://us.profinet.com/products/development/","title":"PI North America: PROFINET development","accessed":"2026-10-25"}],"verification":{"status":"source_checked","checked_at":"2026-10-25","values":18,"method":"llm_source_check"},"updated_at":"2026-10-25","type":"protocol","spec":{"transports":["udp"],"architecture":"producer_consumer","encoding":"binary","default_ports":[{"port":34962,"transport":"udp","secure":false,"purpose":"PROFINET RT unicast"},{"port":34963,"transport":"udp","secure":false,"purpose":"PROFINET RT multicast"},{"port":34964,"transport":"udp","secure":false,"purpose":"PROFINET context manager"},{"port":34965,"transport":"udp","secure":true,"purpose":"PROFINET secure connection management and key provisioning"},{"port":34966,"transport":"udp","secure":true,"purpose":"PROFINET secure real-time data transfer over UDP (unicast and multicast)"}],"data_types":[],"standard_body":"PROFIBUS & PROFINET International (PI)","standard_ref":"IEC 61158 / IEC 61784","related":[]},"url":"https://machineschema.com/protocol/profinet","license":"https://creativecommons.org/licenses/by/4.0/"}