{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7521-1BL10-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7521-1BL10-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7521-1BL10-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7521-1BL10-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 6ES7521-1BL10-0AA0 SIMATIC S7-1500 digital input module, 16 channels, 24 V DC, 25 mm width, supplied with push-in front connectors.","salesMarkdown":"## OEM Integration Brief The 6ES7521-1BL10-0AA0 is a digital input module for the SIMATIC S7-1500 system, providing 16 channels for 24 V DC sensors. The module ships with 40-pole push-in front connectors already included, saving an order line on the BOM. Rated supply is 24 V DC, with a signal \"1\" threshold of +11 to +30 V and typical input current of 2.7 mA. Signal \"0\" spans -30 to +5 V. Switching times are 3 ms to 4 ms in either direction, suitable for most industrial sensor inputs without requiring isochronous mode. Diagnostic alarm and hardware interrupt are not implemented, but the module provides channel-status green LEDs and a RUN/ERROR bi-color LED. I&M data (I&M0 to I&M3) and firmware update capability are available. Sourced against an RFQ with standard lead times for active Siemens automation components. No alternate or equivalent parts are evidenced for this order code; the listing is the precise module specified for a 16-channel 24 V DI group in an S7-1500 rack.","metaTitle":"Siemens 6ES7521-1BL10-0AA0 S7-1500 DI, 16ch, 24V DC","metaDescription":"Siemens 6ES7521-1BL10-0AA0 digital input module for S7-1500. 16 channels, 24V DC, 25mm width, includes 40-pole push-in connectors. Current production, sourced to order via RFQ.","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":"6ES7521-1BL10-0AA0","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 32x24 V DC BA, 32 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.":"260 g","lifecycle_stage":"current","Diagnostic alarm":"No","Firmware version":"V1.0.0","Isochronous mode":"No","Power loss, typ.":"3 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":"32","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","Between The Channels And The Power Supply Of The Electronics":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$227.33","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/da4f8295f282a2bc14c3f333730e33e8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=61708&mlfb=6ES7521-1BL10-0AA0"},"ai":{"faq":[{"question":"What does DI and MSI mean for this module?","answer":"DI indicates it is a digital input module; MSI means the module supports mass input functionality (bundled reading of multiple inputs)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7521-1BL10-0AA0","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/6ES7521-1BL10-0AA0 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}}