{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7521-1BH10-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7521-1BH10-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7521-1BH10-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7521-1BH10-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1500 digital input module, 16 DI, 24 V DC, 25 mm width, 40-pole push-in front connectors, 6ES7521-1BH10-0AA0.","salesMarkdown":"## Digital input slice for the S7-1500 backplane The Siemens 6ES7521-1BH10-0AA0 is a 16-channel digital input module for the S7-1500 system, supplied with 40-pole push-in front connectors. It accepts 24 V DC inputs with signal '1' threshold +11 to +30 V and draws roughly 2.7 mA per channel at '1'. The module is sink/source (P-reading) and supports 2-wire sensors. Dimensions 25 mm x 147 mm x 129 mm, includes 40-pole connectors. Input delay 3-4 ms; cable runs 600 m unshielded, 1 000 m shielded. Power draw is 1.8 W typical. Module isolation tested at 707 V DC. No diagnostic alarm, wire-break, or short-circuit detection — this is a basic 16DI slice. Firmware V1.0.0 is field-updatable. ## Lifecycle and supply This module is listed as current production. No obsolescence notice. Firmware updates are possible via the module's update mechanism. Standard lead times apply through our distribution channel; quote to order for BOM filling.","metaTitle":"Siemens 6ES7521-1BH10-0AA0 DI Module, 16DI, 25mm","metaDescription":"Siemens S7-1500 digital input module 6ES7521-1BH10-0AA0, 16 DI, 24 V DC, 25 mm, includes 40-pole push-in connectors. Active product.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Digital Input Modules"],"specifications":{"DI":"Yes","MSI":"Yes","Depth":"129 mm","Note:":"Supplied incl. 40-pole push-in front connectors","Width":"25 mm","title":"6ES7521-1BH10-0AA0","Height":"147 mm","Counter":"No","RUN LED":"Yes; green LED","I&M data":"Yes; I&M0 to I&M3","ERROR LED":"Yes; red LED","Wire-break":"No","description":"SIMATIC S7-1500 Digital input module, DI 16x24 V DC BA, 16 channels in groups of 16, input delay typ. 3.2 ms, input type 3 (IEC 61131); Delivery incl. front connector Push-in","2-Wire Sensor":"Yes","Short-circuit":"No","For Signal \"0\"":"-30 to +5 V","For Signal \"1\"":"+11 to +30V","Shielded, Max.":"1 000 m","Parameterizable":"No","Weight, approx.":"230 g","lifecycle_stage":"current","Diagnostic alarm":"No","Firmware version":"V1.0.0","Isochronous mode":"No","Power loss, typ.":"1.8 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","Source/sink input":"P-reading","FW update possible":"Yes","Hardware interrupt":"No","At \"0\" To \"1\", Max.":"4 ms","At \"0\" To \"1\", Min.":"3 ms","At \"1\" To \"0\", Max.":"4 ms","At \"1\" To \"0\", Min.":"3 ms","Prioritized startup":"Yes","Between The Channels":"No","Diagnostics function":"No","For Signal \"1\", Typ.":"2.7 mA","HW functional status":"From FS01","Isolation tested with":"707 V DC (type test)","Channel status display":"Yes; green LED","For Module Diagnostics":"No","For Channel Diagnostics":"No","Number of digital inputs":"16","Vertical Installation, Max.":"40 °C","Vertical Installation, Min.":"-30 °C; from FS04","Horizontal Installation, Max.":"60 °C","Horizontal Installation, Min.":"-30 °C; from FS04","Monitoring the supply voltage":"No","Suitable for safety functions":"No","Digital inputs, parameterizable":"No","Between The Channels, In Groups Of":"16","permissible range, lower limit (DC)":"19.2 V","permissible range, upper limit (DC)":"28.8 V","Between The Channels And Backplane Bus":"Yes","PROFIBUS from GSD version/GSD revision":"V1.0 / V5.1","PROFINET from GSD version/GSD revision":"V2.3 / -","Power available from the backplane bus":"1.05 W","Monitoring of the supply voltage (PWR-LED)":"No","Installation altitude above sea level, max.":"5 000 m; Restrictions for installation altitudes > 2 000 m, see manual","STEP 7 configurable/integrated from version":"V5.5 SP3 / -","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA","STEP 7 TIA Portal configurable/integrated from version":"V13 / V13"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$151.13","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/71b65aaec2cb7e1fd3780dfc8950b1d5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=104188&mlfb=6ES7521-1BH10-0AA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7521-1BH10-0AA0","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/6ES7521-1BH10-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}