{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7131-4CD02-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7131-4CD02-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7131-4CD02-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7131-4CD02-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC DP ET 200S electronic module, 6ES7131-4CD02-0AB0, 4 digital inputs, 24...48 V UC, 15 mm width, with group fault LED and parameterizable diagnostics.","salesMarkdown":"## Four inputs that handle AC or DC, 24 to 48 V The 6ES7131-4CD02-0AB0 is a 4-channel digital input module for the ET 200S distributed I/O system. Each channel accepts 24 V to 48 V UC (universal current), meaning the same module handles AC or DC signals without rewiring — useful when a panel mixes 24 VDC sensors and 48 VAC limit switches on the same slice. The input thresholds are defined for both voltage types: a logic 1 is detected at 15 V to 57.6 V DC or 15 V to 48 V AC, while logic 0 sits at -6 V to +6 V DC or 0 V to 5 V AC. That gives a clean noise margin on 24 V nominal circuits and still reads a 48 V signal correctly without a divider network. ## Diagnostics and protection per module This module includes parameterizable diagnostics — the red SF (group error) LED lights on wire break or short circuit. The wire-break detection circuit sources a minimum load current of 0.5 mA to 2 mA through the sensor; if the quiescent current drops below that threshold, the module flags the channel. A fixed current-limiting resistor (18 kΩ at 24 V, 39 kΩ at 48 V) prevents the wire-break sense current from falsely triggering on a healthy 2-wire sensor. Short-circuit protection is provided per module, and reverse-polarity protection is automatic for both AC and DC supplies — the module handles a reversed 24 VDC or 48 VAC connection without damage. ## DIN-rail footprint and backplane loading Unshielded cable runs up to 600 m; shielded runs reach 1 000 m. The input filter is fixed at 15 ms for both on-to-off and off-to-on transitions — adequate for industrial sensors but worth noting if your application needs sub-10 ms response to fast edges.","metaTitle":"Siemens 6ES7131-4CD02-0AB0 ET 200S 4 DI, 24-48V UC","metaDescription":"Siemens 6ES7131-4CD02-0AB0 SIMATIC DP ET 200S electronic module, 4 digital inputs, 24-48V UC, 15mm width, with diagnostics.","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","Height":"81 mm","Wire-break":"Yes","Rated value":"500 mA","With Packing":"4 bit","2-Wire Sensor":"Yes","For Signal \"0\"":"-6 to +6 V DC/ 0 to 5 V AC","For Signal \"1\"":"-15 V DC to -57.6 V DC; 15 V DC to 57.6 V DC; 15 V AC to 48 V AC","Shielded, Max.":"1 000 m","Weight, approx.":"35 g","lifecycle_stage":"current","Power loss, typ.":"0.7 W","Rated value (UC)":"24 V; 24 ... 48 V UC (47 ... 63 Hz)","Unshielded, Max.":"600 m","At \"0\" To \"1\", Max.":"15 ms","At \"1\" To \"0\", Max.":"15 ms","Between The Channels":"No","Diagnostics function":"Yes; Parameterizable","For Signal \"1\", Typ.":"10 mA; 4 to 10 mA","Group error SF (red)":"Yes","Isolation tested with":"2 500 V DC","Type of input voltage":"AC/DC","Type of output voltage":"min. L+ (-0.5 V), under load","Number of digital inputs":"4","Short-circuit protection":"Yes; per module","Reverse polarity protection":"Yes; AC or DC automatic","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","from backplane bus 3.3 V DC, max.":"10 mA","Between The Channels And Backplane Bus":"Yes","Status indicator digital input (green)":"Yes; per channel","Permissible Quiescent Current (2-Wire Sensor), Max.":"2 mA; (0.5 to 2 mA), a minimum load current is necessary for wire break diagnostics.","Fixed current limitation for wire-break monitoring, min.":"18 kΩ; Rated voltage 24 V (15 V to 35 V); rated voltage 48 V (30 V to 60 V): 39 kohms"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$255.27 – $322.00","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=91529&mlfb=6ES7131-4CD02-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7131-4CD02-0AB0/alternatives.json"},"ai":{"faq":[{"question":"How many digital inputs does 6ES7131-4CD02-0AB0 have?","answer":"Four digital inputs, each configurable for AC or DC signals across the 24 V to 48 V range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7131-4CD02-0AB0","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/6ES7131-4CD02-0AB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}