{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1221-1BH32-2XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1221-1BH32-2XB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1221-1BH32-2XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1221-1BH32-2XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-1200 digital input module, 16 inputs, 24 V DC, -40 to 70 °C, diagnostics.","salesMarkdown":"The 6AG1221-1BH32-2XB0 is a SIPLUS variant of the S7-1200 16-point digital input module. It accepts 24 V DC signals with a signal \"1\" threshold of 15 V DC at 2.5 mA, making it compatible with standard 24 V PLC sensors and dry contacts. The inputs are arranged in groups of four, sharing a common return per group — plan your field wiring accordingly. Diagnostics are built in: the module reports wire-break and short-circuit alarms to the CPU, and it monitors the load voltage supply. Each input can be configured for status and diagnostics via TIA Portal. Power draw from the backplane bus is 130 mA at 5 V DC; the module itself dissipates 2.5 W typical. The SIPLUS design extends the temperature range to -40 °C to 70 °C. Cold restart is guaranteed down to -25 °C. The module measures 45 mm wide, 100 mm high, 75 mm deep. A front connector is required but not included. ## Compared to the standard 6ES7221-1BH32-0XB0 Configuration in TIA Portal is identical. The module's order code is recognized as a SIPLUS device, so the software automatically applies the extended temperature derating curves. No special steps required.","metaTitle":"Siemens 6AG1221-1BH32-2XB0 SIPLUS S7-1200 16DI, 24V DC, -40.","metaDescription":"Siemens SIPLUS digital input module for S7-1200, 16 inputs 24 V DC, -40 to 70 °C, diagnostics, 2.5 W. Active production. RFQ for stock.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Digital Input Modules"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"75 mm","Width":"45 mm","title":"6AG1221-1BH32-2XB0","Height":"100 mm","Plastic":"Yes","description":"SIPLUS S7-1200 SM 1221 16DI based on 6ES7221-1BH32-0XB0 with conformal coating, -40…+70 °C, start up -25 °C, digital input 16 DI, 24 V DC, sink/source","In Groups Of":"4","For Signal \"0\"":"5 V DC at 1 mA","For Signal \"1\"":"15 V DC at 2.5 mA","Shielded, Max.":"500 m","For Maintenance":"Yes","Parameterizable":"Yes","Weight, approx.":"210 g","lifecycle_stage":"current","Diagnostic alarm":"Yes","Power loss, typ.":"2.5 W","Rated value (DC)":"24 V","Unshielded, Max.":"300 m","Fall height, max.":"0.3 m; five times, in product package","up to 40 °C, max.":"16","up to 50 °C, max.":"16","Diagnostics function":"Yes","For Signal \"1\", Min.":"2.5 mA","For Signal \"1\", Typ.":"4 mA","At cold restart, min.":"-25 °C","IP degree of protection":"IP20","For Status Of The Inputs":"Yes","Number of digital inputs":"16","Required Front Connector":"Yes","Monitoring the supply voltage":"Yes","from backplane bus 5 V DC, max.":"130 mA","Between The Channels, In Groups Of":"4","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","from load voltage L+ (without load), max.":"4 mA; per channel","Installation altitude above sea level, max.":"5 000 m","Protection against fouling acc. to EN 60664-3":"Yes; Type 1 protection","Product Function / Supply Voltage For Transmitters":"Yes","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)","For Signal \"0\", Max. (Permissible Quiescent Current)":"1 mA","Resistant to commercially available coolants and lubricants":"Yes","Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04":"Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)","Qualification and Performance of Electrical Insulating Compound for Printed Board Assemblies according to IPC-CC-830A":"Yes; Conformal coating, Class A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$318.77 – $849.92","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/93dbdb216a18c178d84777126bfe1549.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=181334&mlfb=6AG1221-1BH32-2XB0"},"ai":{"faq":[{"question":"What is the maximum cable length to the sensors?","answer":"Unshielded cable: up to 300 m. Shielded cable: up to 500 m."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1221-1BH32-2XB0","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/6AG1221-1BH32-2XB0 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}}