{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7131-4BD51-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7131-4BD51-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7131-4BD51-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7131-4BD51-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC DP ET 200S, electronic module, 4 digital inputs 24 V DC, 15 mm width, 5 units per packing unit, spare part.","salesMarkdown":"## 4 source inputs for the ET 200S slice The Siemens 6ES7131-4BD51-0AA0 is a 4-channel digital input module for the ET 200S distributed I/O system, delivering four 24 V DC source inputs in a 15 mm-wide housing. It ships as a 5-unit pack — the packing unit is part of the order code, so one order line lands five identical modules, which is the standard way to stock this spare part for line-side cabinets. ## Signal thresholds and sensor compatibility The input stage recognises a logic '1' at -15 to -30 V and a logic '0' at -5 to +30 V — the negative-going signal range means this module expects sourcing (PNP) sensors that pull the input to the negative rail when active. Each channel draws about 7 mA at 24 V when on, and the module supports 2-wire proximity sensors with a permissible quiescent current up to 1.5 mA, so it won't false-trigger on the leakage of a standard inductive prox. ## Input timing and cable runs The hardware debounce filter is fixed — not parameterisable — with a typical on-delay of 3 ms and a spread of 2 ms to 4.5 ms for both rising and falling edges. That 3 ms floor means the module filters out contact bounce and short sensor glitches, but it also sets the minimum pulse width the downstream PLC logic sees. For cable runs, unshielded twisted-pair is good up to 600 m; shielded cable extends that to 1 000 m, which covers most plant-floor drops from the ET 200S interface module. ## Power budget and isolation The module draws up to 500 mA from the 24 V DC backplane supply, with a typical power loss of 0.7 W — that 500 mA is the ceiling for the module plus its connected sensors, so the upstream ET 200S power module must have headroom for this slice. Channel-to-backplane isolation is tested at 500 V DC, but there is no channel-to-channel isolation, no diagnostics function, and no group-error LED. For applications that need per-channel fault reporting, this is not the module; for simple dry-contact or proximity monitoring where a green per-channel status LED is enough, it fits cleanly.","metaTitle":"Siemens 6ES7131-4BD51-0AA0 ET 200S 4 DI, 24 V DC, 5-pack","metaDescription":"Siemens 6ES7131-4BD51-0AA0 ET 200S electronic module, 4 digital inputs 24 V DC, 15 mm width, 5 units per pack. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"Depth":"52 mm","Width":"15 mm","title":"6ES7131-4BD51-0AA0","Height":"81 mm","Remark":"1 byte","Rated value":"500 mA","description":"*** Spare part *** SIMATIC DP, 5 electronic modules for ET 200S, 4 DI source input 24 V DC, 15 mm width 5 units per packing unit","With Packing":"4 bit","2-Wire Sensor":"Yes","For Signal \"0\"":"-5 to +30V","For Signal \"1\"":"-15 to -30 V","Shielded, Max.":"1 000 m","Parameterizable":"No","Weight, approx.":"35 g","lifecycle_stage":"current","Power loss, typ.":"0.7 W","Rated value (DC)":"24 V","Unshielded, Max.":"600 m","At \"0\" To \"1\", Max.":"4.5 ms","At \"0\" To \"1\", Min.":"2 ms; typically 3 ms","At \"1\" To \"0\", Max.":"4.5 ms","At \"1\" To \"0\", Min.":"2 ms; typically 3 ms","Between The Channels":"No","Diagnostics function":"No","For Signal \"1\", Typ.":"7 mA; at 24 V","Group error SF (red)":"No","Isolation tested with":"500 V DC","Type of input voltage":"DC","Type of output voltage":"max. M +0.5 V, under load","Number of digital inputs":"4","Reverse polarity protection":"Yes","from supply voltage L+, max.":"Dependent on encoder","Address space per module, max.":"1 byte","Permissible Range, Lower Limit":"0 mA","Permissible Range, Upper Limit":"500 mA","Between The Channels And Backplane Bus":"Yes","Status indicator digital input (green)":"Yes; per channel","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$82.30 – $243.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5444c2a6d45e12e1a825e1259ff12c7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=48565&mlfb=6ES7131-4BD51-0AA0"},"ai":{"faq":[{"question":"How many modules come in a pack of 6ES7131-4BD51-0AA0?","answer":"The order code ships as a 5-unit packing unit — one line item delivers five identical 4-input modules. This is the standard Siemens packaging for this spare part."},{"question":"Where can I buy 6ES7131-4BD51-0AA0 and request a quote?","answer":"We source this Siemens ET 200S module to order against your BOM quantity. No stock-holding claim — each order is quoted individually."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7131-4BD51-0AA0","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/6ES7131-4BD51-0AA0 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}}