{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1278-4BD32-2XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1278-4BD32-2XB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1278-4BD32-2XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1278-4BD32-2XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-1200 SM 1278, signal module, 4xIO-Link master V1.1, conformal coating, -40…+70 °C, 24 VDC, 1 W typ. power loss, IP20, requires front connector.","salesMarkdown":"## What this SIPLUS IO-Link master is The 6AG1278-4BD32-2XB0: It operates on 24 VDC (20.4 V to 28.8 V permissible) and draws about 1 W typical power loss — a right-sized spec for the S7-1200 backplane. IP20 rated, so it belongs inside a cabinet. It requires a front connector (sold separately) for field wiring — factor that into your BOM line. The conformal coating and wide temperature range make it the go-to choice for environments with condensation, coolant mist, or salt spray — the standard 6ES7278-4BD32-0XB0 lacks that protection.","metaTitle":"Siemens 6AG1278-4BD32-2XB0 SIPLUS S7-1200 SM 1278","metaDescription":"Siemens 6AG1278-4BD32-2XB0 SIPLUS S7-1200 SM 1278 IO-Link master, 4-channel, conformal coated, -40 to +70 °C. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"75 mm","Width":"45 mm","Height":"100 mm","Plastic":"Yes","Weight, approx.":"150 g","lifecycle_stage":"current","Power loss, typ.":"1 W","Rated value (DC)":"24 V","Fall height, max.":"0.3 m; five times, in product package","Diagnostics function":"Yes","At cold restart, min.":"-25 °C","IP degree of protection":"IP20","Required Front Connector":"Yes","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Installation altitude above sea level, max.":"5 000 m","Protection against fouling acc. to EN 60664-3":"Yes; Type 1 protection","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)","Resistant to commercially available coolants and lubricants":"Yes; Incl. diesel and oil droplets in the air","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/074fd6e6e84d896c195372d9ea016334.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=567218&mlfb=6AG1278-4BD32-2XB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6AG1278-4BD32-2XB0/alternatives.json"},"ai":{"faq":[{"question":"Is 6AG1278-4BD32-2XB0 a suitable replacement for 6ES7278-4BD32-0XB0?","answer":"It is a drop-in functional replacement for harsh-environment applications."},{"question":"Does 6AG1278-4BD32-2XB0 require a front connector?","answer":"Yes — a front connector is required for field wiring and is sold separately. Factor that into your BOM."},{"question":"Is 6AG1278-4BD32-2XB0 compatible with Siemens S7-1200?","answer":"Yes — it is a SIPLUS S7-1200 SM 1278 signal module designed for the S7-1200 system, snapping onto the same DIN rail and communicating via the backplane bus."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1278-4BD32-2XB0","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/6AG1278-4BD32-2XB0 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}}