{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7321-1BP00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7321-1BP00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7321-1BP00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7321-1BP00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 SM 321 digital input module, 64 DI, 24 V DC, isolated in groups of 16, 112 mm depth.","salesMarkdown":"## What this module fits The Siemens 6ES7321-1BP00-0AA0 is a SIMATIC S7-300 digital input module packing 64 channels in a 40 mm wide housing. It is isolated in groups of 16, meaning each group of 16 inputs shares a common reference. This module lacks any on-board diagnostics, parameterization, or interrupt capabilities—it's a straight 24 VDC sink/source input block. This module requires a dedicated front connector cable and terminal blocks for termination. ## Signal characteristics and power draw The module operates on a 24 VDC supply with typical power loss of 7 W. Input thresholds are -30 to +5 V for a logical 0 and 13 to 30 V for a logical 1, drawing a typical 4.2 mA per channel at signal 1. Switching delays run 1.2 ms minimum to 4.8 ms maximum for both 0-to-1 and 1-to-0 transitions. Unshielded cable runs up to 600 m and shielded up to 1 000 m are supported. The backplane bus draws up to 100 mA at 5 V DC; isolation between channels and backplane is via optocoupler, tested at 500 V DC.","metaTitle":"Siemens 6ES7321-1BP00-0AA0 SM 321, 64 DI, 24 VDC","metaDescription":"SIMATIC S7-300 digital input SM 321, 64 channels isolated in groups of 16, 24 VDC, 4.2 ms typical delay, requires front connector 6ES7392-xx. Depth 112 mm. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Digital Input Modules"],"specifications":{"Depth":"112 mm","Width":"40 mm","title":"6ES7321-1BP00-0AA0","Alarms":"No","Height":"125 mm","Wire-break":"No","Rated value":"4.2 ms","description":"SIMATIC S7-300 digital input SM 321, Isolated in groups of 16, 64 DI, 24 V DC, 3ms, Sink/source input Terminal blocks 6ES7392-1.N00-0AA0 and cable 6ES7392-4...0-0AA0 required","2-Wire Sensor":"No","For Signal \"0\"":"-30 to +5 V","For Signal \"1\"":"13 to 30V","Shielded, Max.":"1 000 m","Parameterizable":"No","Weight, approx.":"230 g","lifecycle_stage":"eol_hot","Diagnostic alarm":"No","Power loss, typ.":"7 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","Hardware interrupt":"No","up to 40 °C, max.":"32","up to 60 °C, max.":"32","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.":"4.2 mA","Group error SF (red)":"No","Isolation tested with":"500 V DC","Type of input voltage":"DC","Number of digital inputs":"64","Required Front Connector":"Cable: 6ES7392-4Bxx0-0AA0 terminal blocks: 6ES7392-1xN00-0AA0","Encoder supply Vs (green)":"No","Reverse polarity protection":"Yes","Diagnostic information readable":"No","from backplane bus 5 V DC, max.":"100 mA","Between The Channels, In Groups Of":"16","Between The Channels And Backplane Bus":"Yes; Optocoupler","Status indicator digital input (green)":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$303.00 – $444.50","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5f39ab88bb5e2c7ffacb94a3c85d524c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=46945&mlfb=6ES7321-1BP00-0AA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7321-1BP00-0AA0","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/6ES7321-1BP00-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}