{"schemaVersion":1,"slug":"plc-transistor-output","name":"PLC transistor output","kind":"symbol","abbreviation":"DO TRANS","aliases":[],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"A PLC transistor output switches a documented electronic path for a field load.","description":["A PLC transistor output switches a documented electronic path for a field load. Output polarity, common connections and load protection follow the selected module wiring instructions."],"readingNotes":["Check output sourcing or sinking behaviour before connecting the actuator.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Identify channel and common","State output polarity","Reference load and protection requirements"],"distinction":"A transistor output differs from an isolated mechanical relay contact.","facts":[{"label":"Drawing role","value":"Controller interface"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Identifier status","value":"The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name."}],"references":[{"sourceId":"pub-symbol-digital-io","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["plc-io","terminal"],"artwork":"edu-plc-transistor-output","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/plc-transistor-output","illustration":{"url":"https://eloragrid.ai/library/illustrations/plc-transistor-output.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-symbol-digital-io","title":"Modicon TM3 digital I/O hardware guide","publisher":"Schneider Electric","url":"https://www.se.com/ca/en/download/document/EIO0000003125/","type":"manufacturer","scope":"Public manufacturer explanation of the equipment function and selection context.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}]}