{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7211-0BA20-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7211-0BA20-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7211-0BA20-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7211-0BA20-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-200 CPU 221, 6ES7211-0BA20-0XB0, AC/DC/Relay, 2 kWords program memory, 0.15 kg.","salesMarkdown":"## CPU 221 for compact standalone control The Siemens SIMATIC S7-200 CPU 221 (6ES7211-0BA20-0XB0) is the smallest fixed-I/O controller in the S7-200 family, built for standalone applications that don't need expansion modules. It carries 2 kWords of program memory and combines AC power supply with DC inputs and relay outputs — a common configuration for valve control, conveyor interlocks, and simple machine logic where the load voltage differs from the control voltage. ## Program memory and I/O mix 2 kWords program memory limits the ladder logic footprint — this CPU suits applications under about 100–150 rungs of typical bit-logic and timers, not data-heavy motion or recipe management. The AC/DC/Relay designation means the CPU is powered by 120–240 VAC, the inputs are 24 VDC sourcing, and the outputs are relay contacts rated for up to 2 A per channel — the relay bank handles mixed voltages on the load side without separate interposing relays. Listed as current production — the CPU 221 remains an active order code within the S7-200 portfolio.","metaTitle":"Siemens 6ES7211-0BA20-0XB0 S7-200 CPU 221, AC/DC/Relay","metaDescription":"Siemens SIMATIC S7-200 CPU 221, 6ES7211-0BA20-0XB0, AC/DC/Relay output, 2 kWords program memory. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"title":"6ES7211-0BA20-0XB0","Part #":"6ES7211-0BA20-0XB0","Weight":"0.15 kgs","Category":"PLCs and Accessories","description":"CPU 221, 2kWords; AC/DC/RLY","Sub Category":"Industrial Computer Board","Top Category":"PLCs & HMIs","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$127.79","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f197dc5500844272ef47c2d7b0a90673.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=483727&mlfb=6ES7211-0BA20-0XB0"},"ai":{"faq":[{"question":"How can I order 6ES7211-0BA20-0XB0 or get a quote?","answer":"Submit an RFQ for volume pricing and lead time confirmation."},{"question":"What is the program memory size of the CPU 221?","answer":"2 kWords of program memory — this is the smallest memory footprint in the S7-200 family, suited for compact bit-logic and timer-based applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7211-0BA20-0XB0","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/6ES7211-0BA20-0XB0 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}}