{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7321-1BH02-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7321-1BH02-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7321-1BH02-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7321-1BH02-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 SM 321 digital input module, 6ES7321-1BH02-0AA0, 16 isolated inputs, 24 V DC, 1x 20-pole front connector.","salesMarkdown":"## Integration Notes The 6ES7321-1BH02-0AA0: Mounts in a standard S7-300 rack; the 40 mm width occupies one slot position. The 20-pin front connector is required and sold separately. No parameterization, diagnostic alarms, or hardware interrupts are supported — this is a basic input module. The 16 inputs are grouped in one isolated group; no channel-to-channel isolation is provided. Unshielded cable runs up to 600 m, shielded up to 1,000 m. The permissible supply voltage range is 20.4 to 28.8 V DC.","metaTitle":"Siemens 6ES7321-1BH02-0AA0 SM 321 16 DI, 24 V DC","metaDescription":"SIMATIC S7-300 digital input module, 16 isolated inputs, 24 V DC, 20-pole front connector. EOL hot — source to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Digital Input Modules"],"specifications":{"Depth":"120 mm","Width":"40 mm","Alarms":"No","Height":"125 mm","2-Wire Sensor":"Yes","For Signal \"0\"":"-30 to +5 V","For Signal \"1\"":"13 to 30V","Shielded, Max.":"1 000 m","Parameterizable":"No","Weight, approx.":"200 g","lifecycle_stage":"eol_hot","Diagnostic alarm":"No","Power loss, typ.":"3.5 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","Hardware interrupt":"No","up to 40 °C, max.":"16","up to 60 °C, max.":"16","At \"0\" To \"1\", Max.":"4.8 ms","At \"0\" To \"1\", Min.":"1.2 ms","At \"1\" To \"0\", Max.":"4.8 ms","At \"1\" To \"0\", Min.":"1.2 ms","Between The Channels":"No","Diagnostics function":"No","For Signal \"1\", Typ.":"7 mA","Isolation tested with":"500 V DC","Type of input voltage":"DC","Number of digital inputs":"16","Required Front Connector":"20-pin","from backplane bus 5 V DC, max.":"10 mA","Between The Channels, In Groups Of":"16","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Between The Channels And Backplane Bus":"Yes; Optocoupler","Status indicator digital input (green)":"Yes","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$38.10","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/45ea4fb3b4ee74c0053ec07e3c98cfeb.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=417522&mlfb=6ES7321-1BH02-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7321-1BH02-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of this module?","answer":"The depth is 120 mm."},{"question":"What is the width of this module?","answer":"The width is 40 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7321-1BH02-0AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7321-1BH02-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}