{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7138-4DB00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7138-4DB00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7138-4DB00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7138-4DB00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens ET 200S 1SSI 25Bit/2MHz encoder interface module, 1 digital input, 24 V DC, 15 mm width, current production.","salesMarkdown":"## Cable length and wiring constraints The 6ES7138-4DB00-0AB0: Maximum cable length depends on the clock frequency used. For shielded twisted-pair cable: 600 m is achievable at lower frequencies up to 125 kHz; at 250 kHz the limit is 160 m; at 500 kHz it drops to 60 m; at 1 MHz to 20 m; and at 2 MHz to 8 m. Unshielded cable is limited to 32 m. The input is isolated from the backplane bus but shares a common load voltage L+ (no isolation between channels and L+). Short-circuit protection and reverse polarity protection are included. ## Status and diagnostics The module provides per-channel status indicators: a green LED for the digital input, green LEDs for forward/backward counting direction, and a red group-error SF (system fault) LED. The output voltage type is L+ minus 0.8 V, with a maximum output current of 500 mA — sufficient for encoder supply.","metaTitle":"Siemens 6ES7138-4DB00-0AB0 ET 200S SSI module, 15mm","metaDescription":"Active Siemens 6ES7138-4DB00-0AB0 ET 200S SSI encoder interface, 1 channel, 25-bit, 2 MHz, 24V DC, 15x52x81 mm. Current production — specify into BOM.","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":"6ES7138-4DB00-0AB0","Height":"81 mm","Remark":"8 byte","Functions":"Trigger for unlatching the current actual value, e.g. for length measurement","Gray code":"1","Binary code":"1","description":"ET 200S 1SSI 25Bit/2MHz","2-Wire Sensor":"Yes","Monoflop time":"settable: 16/32/48/64 µs","For Signal \"0\"":"11 V DC to 30 V DC","For Signal \"1\"":"-30 V DC to +5 V DC","Shielded, Max.":"600 m","Weight, approx.":"40 g","lifecycle_stage":"current","Power loss, typ.":"0.8 W","Rated value (DC)":"24 V","Unshielded, Max.":"32 m","At \"0\" To \"1\", Max.":"300 µs","For Signal \"1\", Typ.":"9 mA","Group error SF (red)":"Yes","Output current, max.":"500 mA","Absolute encoder (SSI)":"Yes","Type of output voltage":"L+ (-0.8 V)","Number of digital inputs":"1","Short-circuit protection":"Yes","Reverse polarity protection":"Yes","Cable length, shielded, max.":"320 m; 320 m at 125 kHz, 160 m at 250 kHz, 60 m at 500 kHz, 20 m at 1 MHz, 8 m at 2 MHz, twisted in pairs and shielded","Telegram length, parameterizable":"13, 21, 25 bit","from backplane bus 3.3 V DC, max.":"10 mA","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Number of connectable encoders, max.":"1","Between The Channels And Backplane Bus":"Yes","Status indicator digital input (green)":"Yes","Between the channels and load voltage L+":"No","Status indicator forward counting (green)":"Yes","from load voltage L+ (without load), max.":"34 mA","Status indicator backward counting (green)":"Yes","For Signal \"0\", Max. (Permissible Quiescent Current)":"2 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$190.50","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=407851&mlfb=6ES7138-4DB00-0AB0"},"ai":{"faq":[{"question":"What is the module's width and depth for DIN-rail planning?","answer":"Width 15 mm, depth 52 mm, height 81 mm — fits a single ET 200S slot with standard 15 mm spacing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7138-4DB00-0AB0","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/6ES7138-4DB00-0AB0 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}}