{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7221-1BF22-0XA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7221-1BF22-0XA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7221-1BF22-0XA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7221-1BF22-0XA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-200 EM 221 digital input module, 8 DI, 24 V DC, sinking-sourcing, spare part 6ES7221-1BF22-0XA0.","salesMarkdown":"## Spare-part fit for S7-200 racks The Siemens 6ES7221-1BF22-0XA0 is a spare-part EM 221 digital input module for the SIMATIC S7-200 family, specifically the 22X CPU series. It provides 8 digital inputs rated for 24 V DC, with both sinking and sourcing wiring supported. ## Signal thresholds and wiring reach The module reads a logic '1' signal between +15 and +30 V DC, with a typical input current of 4 mA at the '1' level. Logic '0' is 0 to 5 V DC. Maximum permissible quiescent current from a 2-wire sensor is 1 mA. Unshielded sensor cable runs up to 300 m; shielded runs up to 500 m. Inputs are grouped in blocks of 4 with optocoupler isolation between groups. ## Panel footprint and power draw The module measures 46 mm wide, 80 mm high, and 62 mm deep, with plug-in I/O terminals for quick replacement. Typical power loss is 2 W; it draws 30 mA from the 5 V DC backplane bus. ## Sourcing for an active spare The 6ES7221-1BF22-0XA0 carries a current lifecycle stage — it is an active spare part for installed S7-200 systems.","metaTitle":"Siemens 6ES7221-1BF22-0XA0 EM 221 Digital Input Module","metaDescription":"Siemens 6ES7221-1BF22-0XA0 spare part SIMATIC S7-200 EM 221 digital input module. 8 inputs, 24 V DC, sinking-sourcing. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Digital Input Modules"],"specifications":{"Depth":"62 mm","Width":"46 mm","title":"6ES7221-1BF22-0XA0","Height":"80 mm","description":"***Spare part*** SIMATIC S7-200, Digital input EM 221, only for S7-22X CPU, 8 DI, 24 V DC, sinking-sourcing","2-Wire Sensor":"Yes","For Signal \"0\"":"0 to 5 V","For Signal \"1\"":"+15 to +30 V","Shielded, Max.":"500 m","Weight, approx.":"150 g","lifecycle_stage":"current","Power loss, typ.":"2 W","Rated value (DC)":"24 V","Unshielded, Max.":"300 m","Source/sink input":"Yes","At \"0\" To \"1\", Max.":"4.5 ms","For Signal \"1\", Typ.":"4 mA","Plug-in I/O terminals":"Yes","Type of input voltage":"DC","Number of digital inputs":"8","from backplane bus 5 V DC, max.":"30 mA","Between The Channels, In Groups Of":"4","Potential separation digital inputs":"Yes; Optocoupler","Permissible Quiescent Current (2-Wire Sensor), Max.":"1 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$131.45 – $164.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4244e6711ca4776ca4f58c20846e85d2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=436791&mlfb=6ES7221-1BF22-0XA0"},"ai":{"faq":[{"question":"Is 6ES7221-1BF22-0XA0 obsolete or has a replacement?","answer":"The module is listed as current lifecycle stage — still an active spare part for the S7-200 platform. No official replacement or successor has been issued for this order code."},{"question":"How can I order the Siemens 6ES7221-1BF22-0XA0?","answer":"This spare part is quoted to order against your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7221-1BF22-0XA0","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/6ES7221-1BF22-0XA0 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}}