{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7157-0AA81-0XA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7157-0AA81-0XA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7157-0AA81-0XA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7157-0AA81-0XA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC DP IM157, 6ES7157-0AA81-0XA0, DP/PA link coupler for PROFIBUS DP, extended temperature range -25 to 60 °C, 24 V DC, 4 W typ.","salesMarkdown":"## Power budget and hold-up time The 6ES7157-0AA81-0XA0: Typical power loss is 4 W, but the module draws less in DP/PA link mode (approx. 2 W) versus Y-link mode (approx. 4 W). Maximum current consumption is 200 mA from the 24 V DC supply (100 mA in DP/PA link, 200 mA in Y-link). The 20 ms voltage failure stored energy time gives the control system a window to ride through brief dips — important for process plants that cannot tolerate a bus dropout on a sag. ## Configuration and capacity Supports the 'configuration during plant operation' feature — you can add or modify PA devices without shutting down the DP network. Up to five DP/PA couplers and a total of 64 slaves can be attached behind the link. The PROFIBUS DP side accepts baud rates from 9.6 kbit/s to 12 Mbit/s, with automatic detection.","metaTitle":"6ES7157-0AA81-0XA0 SIMATIC DP IM157, extended temp -25 to 60","metaDescription":"Active SIMATIC DP IM157 interface module for DP/PA link. Extended temperature range -25 to 60 °C. Supports up to 5 DP/PA couplers and 64 slaves. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"Max.":"60 °C","Min.":"-25 °C","Depth":"130 mm","Width":"40 mm","title":"6ES7157-0AA81-0XA0","Height":"125 mm","Mounting":"4-pin screw terminal; short-circuit bridge between PE and M24; for ungrounded operation the short-circuit bridge must be removed (the DP-interface is always ungrounded, regardless of this)","PROFIBUS DP":"Yes","description":"SIMATIC DP, IM157 INTERFACE FOR EXPANDED TEMPERATURE RANGE IM157 COUPLER MODULE DP/PA LINK THE IM157 AND ONE OR MORE DP/PA COUPLERS FORM THE DP/PA LINK","lifecycle_stage":"current","Power loss, typ.":"4 W; Approx. 2 W (in the DP/PA link); approx. 4 Watts (in the Y link)","Rated value (DC)":"24 V","Product description":"DP link (9.6 kbit/s to 12 Mbit/s) with support for the functionality \"Configuration during plant operation\". Up to 5 DP/PA couplers and max. 64 slaves can be connected (DP/PA link). Stand-alone mode of the IM 157 is not possible.","Group error SF (red)":"Yes","Bus activity DP (yellow)":"Yes","Bus activity PA (yellow)":"Yes","Current consumption, max.":"200 mA; max. 100 mA (in the DP/PA link), max. 200 mA (in the Y-link)","Design of electrical connection":"9-pin sub-D connector; pin assignment as described in IEC 61158 / EN 50170, Vol. 2 2 described","Mains/voltage failure stored energy time":"20 ms","Monitoring 24 V voltage supply ON (green)":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$815.34","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/599fb3d3d8592ec955b0ddbf0a810439.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=434074&mlfb=6ES7157-0AA81-0XA0"},"ai":{"faq":[{"question":"What is the operating temperature range?","answer":"It is rated for -25 °C minimum to 60 °C maximum ambient temperature."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7157-0AA81-0XA0","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/6ES7157-0AA81-0XA0 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}}