{"schemaVersion":1,"slug":"plc-analog-input","name":"PLC analog input","kind":"symbol","abbreviation":"AI","aliases":[],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"A PLC analog input measures a documented voltage, current or sensor quantity.","description":["A PLC analog input measures a documented voltage, current or sensor quantity. Its signal range, common and any shield/earth connection require explicit wiring information."],"readingNotes":["Identify the selected channel mode before interpreting its terminals.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["State signal type/range","Show signal common and shield","Reference channel configuration"],"distinction":"Analog measurement carries a range of values; a digital input reads a discrete state.","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-analog-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-analog-input","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/plc-analog-input","illustration":{"url":"https://eloragrid.ai/library/illustrations/plc-analog-input.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-analog-io","title":"Modicon TM3 analog I/O hardware guide","publisher":"Schneider Electric","url":"https://www.se.com/us/en/download/document/EIO0000003131/","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."}]}