{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7321-1BH10-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7321-1BH10-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7321-1BH10-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7321-1BH10-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 SM 321 digital input module, 6ES7321-1BH10-0AA0, 16 isolated inputs, 24 V DC, 20-pin front connector, depth 120 mm, width 40 mm.","salesMarkdown":"## 16-channel DC input module for S7-300 The 6ES7321-1BH10-0AA0: This SM 321 module provides 16 digital inputs, each accepting 24 V DC nominal (permissible range 20.4 V to 28.8 V). The typical input current at signal \"1\" is 7 mA, with a quiescent current limit of 1.5 mA for 2-wire sensors. Input delay is fixed at 25 µs min to 75 µs max for both 0→1 and 1→0 transitions — not parameterizable. The module does not support diagnostic alarms, hardware interrupts, or channel-to-channel isolation; all 16 inputs share a common group isolated from the backplane bus via optocoupler. Unshielded cable runs up to 600 m are permitted; shielded runs up to 1 000 m. Power dissipation is 3.8 W typical, and the module draws 110 mA max from the 5 V DC backplane bus.","metaTitle":"Siemens 6ES7321-1BH10-0AA0 SM 321, 16 DI, 24 V DC, obsolete","metaDescription":"Siemens 6ES7321-1BH10-0AA0 SIMATIC S7-300 digital input module, 16 channels, 24 V DC, 20-pin. End-of-life (EOL) — sourced to order against 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.":"3.8 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.":"75 µs","At \"0\" To \"1\", Min.":"25 µs","At \"1\" To \"0\", Max.":"75 µs","At \"1\" To \"0\", Min.":"25 µs","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.":"110 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":"$77.77 – $226.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/01a1848ea02c80e95349119a771ea726.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=156040&mlfb=6ES7321-1BH10-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7321-1BH10-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How can I order 6ES7321-1BH10-0AA0 or check stock?","answer":"This module is sourced to order against an RFQ. Submit a request for current pricing and availability; the quote will confirm lead time and stock position at the time of inquiry."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7321-1BH10-0AA0","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/6ES7321-1BH10-0AA0 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}}