{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1521-1BL00-7AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1521-1BL00-7AB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1521-1BL00-7AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1521-1BL00-7AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS SM 1221, 6AG1521-1BL00-7AB0, 32 x 24 V DC digital input module, 35 mm width, active production.","salesMarkdown":"## Input module for warm-panel density The Siemens SIPLUS 6AG1521-1BL00-7AB0 is a 32-channel digital input module for the S7-1200 system, handling 24 V DC sink/source signals. The key limitation: above +60 °C ambient, only 16 inputs can be switched simultaneously – plan your input count per slot if the panel runs hot. Power draw is 4.2 W typical, and the module isolates between channels at 75 V DC/60 V AC base isolation. 35 mm wide, 129 mm deep, 147 mm tall – it fits standard S7-1200 mounting rails with one module width. Unshielded cable runs up to 600 m; shielded up to 1 000 m. The input threshold for signal 1 is +11 to +30 V at a typical 2.5 mA per channel. Diagnostic alarms and hardware interrupts are parameterizable, with firmware V1.0.0. ## Pure input vs. combination module The 6AG1521-1BL00-7AB0 is a pure 32-channel input block. Compared to the SIPLUS 6AG1123-2DB03-2AX0 (16 digital inputs + 16 digital outputs), this module delivers double the input capacity per slot and fewer wiring terminals on the output side. Choose this when your BOM needs input density and you already have output coverage elsewhere.","metaTitle":"Siemens 6AG1521-1BL00-7AB0 SIPLUS SM 1221 DI 32, 35mm","metaDescription":"Siemens SIPLUS SM 1221 32 digital inputs, 24 V DC, 35 mm wide, active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Digital Input Modules"],"specifications":{"Depth":"129 mm","Width":"35 mm","title":"6AG1521-1BL00-7AB0","Height":"147 mm","RUN LED":"Yes; green LED","I&M data":"Yes; I&M0 to I&M3","ERROR LED":"Yes; red LED","Fuse blown":"No","Wire-break":"Yes; to I < 350 µA","description":"SIPLUS S7-1500 DI 32x24VDC HF based on 6ES7521-1BL00-0AB0 with conformal coating, -40…+70 °C, digital input module, 32 channels in groups of 16; input delay 0.05..20 ms input type 3 (IEC 61131); diagnostics; hardware interrupts","Fast startup":"Yes; 500 ms","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":"Yes","Weight, approx.":"260 g","lifecycle_stage":"current","Diagnostic alarm":"Yes","Firmware version":"V1.0.0","Isochronous mode":"Yes","Power loss, typ.":"4.2 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","Source/sink input":"P-reading","Hardware interrupt":"Yes","At \"0\" To \"1\", Max.":"20 ms","At \"0\" To \"1\", Min.":"0.05 ms","At \"1\" To \"0\", Max.":"20 ms","At \"1\" To \"0\", Min.":"0.05 ms","Between The Channels":"Yes","Diagnostics function":"Yes","For Signal \"1\", Typ.":"2.5 mA","HW functional status":"E01","Isolation tested with":"707 V DC (type test)","Channel status display":"Yes; green LED","For Module Diagnostics":"Yes; red LED","For Channel Diagnostics":"Yes; red LED","Number of digital inputs":"32; > +60 °C, number of simultaneously controllable inputs max. 16","Current consumption, max.":"40 mA; 20 mA per group with 24 V DC supply","Between Different Circuits":"75 V DC/60 V AC (base isolation)","Bus cycle time (TDP), min.":"250 µs","Reverse polarity protection":"Yes","Vertical Installation, Max.":"40 °C; = Tmax","Vertical Installation, Min.":"-40 °C; = Tmin","Horizontal Installation, Max.":"70 °C; = Tmax; > +60 °C number of simultaneously controllable inputs max. 16","Horizontal Installation, Min.":"-40 °C; = Tmin (incl. condensation/frost)","Monitoring the supply voltage":"Yes","Suitable for safety functions":"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","Power available from the backplane bus":"1.1 W","Filtering and processing time (TCI), min.":"80 µs; At 50 μs filter time","Monitoring of the supply voltage (PWR-LED)":"Yes; green LED","Installation altitude above sea level, max.":"5 000 m","Protection against fouling acc. to EN 60664-3":"Yes; Type 1 protection","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA","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)","STEP 7 TIA Portal configurable/integrated from version":"V12 / V12","Resistant to commercially available coolants and lubricants":"Yes; Incl. diesel and oil droplets in the air","Between The Channels And The Power Supply Of The Electronics":"No","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":"$393.70","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5c00bff0b48e5d36d0fcf7febe402f30.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=131167&mlfb=6AG1521-1BL00-7AB0"},"ai":{"faq":[{"question":"What are the key specifications of this module?","answer":"32 digital inputs, 24 V DC, rated for sink/source (P-reading). Width 35 mm, depth 129 mm, height 147 mm. Power loss typ. 4.2 W, max current consumption 40 mA. Input delay configurable from 0.05 ms to 20 ms."},{"question":"Does the module have diagnostic capabilities?","answer":"Yes, it features a diagnostic alarm, wire-break detection (I < 350 µA), channel status display per input (green LED), and both module and channel diagnostics (red LEDs)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1521-1BL00-7AB0","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/6AG1521-1BL00-7AB0 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}}