{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7321-7BH80-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7321-7BH80-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7321-7BH80-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7321-7BH80-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 SM 321 digital input module, 6ES7321-7BH80-0AB0, 16 optically isolated inputs, 24V DC, expanded temperature range, 20-pin front connector, hardware interrupts, diagnostics.","salesMarkdown":"## 16-channel DI with process interrupts The 6ES7321-7BH80-0AB0 is a SIMATIC S7-300 SM 321 digital input module providing 16 optically isolated inputs at 24V DC, designed for the expanded temperature range variant. It supports hardware interrupts and diagnostic alarms, making it suitable for applications requiring fast fault response and condition monitoring. ## Input characteristics and wiring The module accepts 2-wire sensors with a permissible quiescent current up to 1.5 mA. Signal '1' is detected between 13 and 30V with a typical current draw of 7 mA; signal '0' spans -30 to +5V. The input filter is parameterizable with selectable debounce times of 0.1, 0.5, 3, 15, or 20 ms. ## Isolation and diagnostics Channels are isolated from the backplane bus via optocouplers, with isolation tested at 500V DC. The module reports internal and external faults through its diagnostic function and can generate hardware interrupts for time-critical events.","metaTitle":"Siemens 6ES7321-7BH80-0AB0 SM 321 DI Module, 16 Inputs","metaDescription":"SIMATIC S7-300 SM 321 digital input module, 16 DI at 24V DC, expanded temp range, hardware interrupts, diagnostics. End-of-life — sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Digital Input Modules"],"specifications":{"Depth":"120 mm","Width":"40 mm","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":"Yes; 0.1 / 0.5 / 3 / 15 / 20 ms","Weight, approx.":"200 g","lifecycle_stage":"eol_hot","Diagnostic alarm":"Yes","Power loss, typ.":"4 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","Hardware interrupt":"Yes","up to 40 °C, max.":"16","up to 60 °C, max.":"16","Diagnostics function":"Yes; internal/ external fault","For Signal \"1\", Typ.":"7 mA","Isolation tested with":"500 V DC","Number of digital inputs":"16","Required Front Connector":"20-pin","from backplane bus 5 V DC, max.":"55 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","from load voltage L+ (without load), max.":"40 mA","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$412.58","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=312710&mlfb=6ES7321-7BH80-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7321-7BH80-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Does 6ES7321-7BH80-0AB0 support hardware interrupts?","answer":"Yes, the module supports hardware interrupts, allowing it to trigger a CPU interrupt on a defined input edge for time-critical process events."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7321-7BH80-0AB0","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/6ES7321-7BH80-0AB0 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}}