{"id":"profibus-pa","model_id":"PROFIBUS PA","name":"PROFIBUS PA","summary":"PROFIBUS PA is the process automation application profile of PROFIBUS, used to connect process field devices on a fieldbus. PA segments connect to PROFIBUS DP through a coupler or linking device, and can also connect directly to PROFINET using proxy technology. PA Profile V3.02 allows a replacement device to take over the predecessor's role without interrupting system operation.","study_notes":["PROFIBUS is standardized in IEC 61158.","PROFIBUS PA Profile V3.02 lets a replacement field device automatically take over the role of its predecessor, including across device generations, without interrupting system operation.","A PROFIBUS PA string connects to PROFIBUS DP through a coupler or linking device.","PA segments can be connected directly to PROFINET using proxy technology.","Diagnostic data display is sorted according to NAMUR NE 107.","MBP (Manchester Coded Bus Powered) transmission technology provides a typical supply current of 10–15 mA on the bus cable for bus-powered field devices.","PA Profile 3.02 includes a NAMUR-compliant diagnostics concept."],"safety_notes":["PROFIBUS PA applications can be deployed in hazardous environments."],"sources":[{"url":"https://www.profibus.com/technologies/profibus","title":"PROFIBUS","accessed":"2026-10-25"},{"url":"https://www.profibus.com/technologies/profinet/information-models/pa-dim","title":"PA-DIM","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":"PROFIBUS & PROFINET International (PI)","standard_ref":"IEC 61158","related":["profinet"]},"url":"https://machineschema.com/protocol/profibus-pa","license":"https://creativecommons.org/licenses/by/4.0/"}