{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1278-4BD32-4XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1278-4BD32-4XB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1278-4BD32-4XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1278-4BD32-4XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-1200 SM 1278 IO-Link signal module, 4xIO-Link master V1.1, conformal coating, -40…70°C, 24 VDC, 1 W typ, IP20, 45 x 100 x 75 mm.","salesMarkdown":"## SIPLUS variant with conformal coating The 6AG1278-4BD32-4XB0: The conformal coating (Class A per IPC-CC-830A) and resistance to coolants, lubricants, diesel, and oil droplets make it suitable for installations where airborne contaminants are present. It also meets ANSI/ISA-71.04 environmental conditions for process control systems, including Level GX group A/B gas resistance and salt spray (LC3) and oil (LB3) levels. ## Temperature and altitude derating Above 2000 m, derate the maximum temperature by 10 K up to 3500 m, and by 20 K up to 5000 m. Cold restart is guaranteed from 0 °C minimum, so the module can power up after a cold soak at -40 °C but must be warmed before cycling power. ## Supply and power budget Rated 24 VDC supply with a permissible range of 20.4 to 28.8 V, covering the full tolerance band for industrial 24 V rails including the ripple margin. Typical power loss is only 1 W, which keeps the thermal contribution to the enclosure low — relevant when stacking multiple modules in a confined cabinet. ## Panel fit and diagnostics A front connector is required (ordered separately). Onboard diagnostics function is included for channel-level fault indication.","metaTitle":"Siemens 6AG1278-4BD32-4XB0 SIPLUS SM 1278 IO-Link, -40…70°C","metaDescription":"SIPLUS S7-1200 SM 1278 4xIO-Link master, conformal coated, -40 to 70°C, 24 VDC, 1 W typ. Active production. Quoted 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.":"0 °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":"$663.57","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/013fe1b3cba4f82810b82a110b3989ea.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=567219&mlfb=6AG1278-4BD32-4XB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6AG1278-4BD32-4XB0/alternatives.json"},"ai":{"faq":[{"question":"What environmental protections does the conformal coating provide?","answer":"The conformal coating (Class A per IPC-CC-830A) resists commercially available coolants, lubricants, diesel, and oil droplets. The module also meets ANSI/ISA-71.04 levels GX, LC3, and LB3 for gas, salt spray, and oil resistance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1278-4BD32-4XB0","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/6AG1278-4BD32-4XB0 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}}