{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7972-0DA00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7972-0DA00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7972-0DA00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7972-0DA00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC DP, RS485 terminating resistor for terminating PROFIBUS/MPI networks, 24 V DC, 30 mA, IP20, screw terminal block, 60 x 70 x 43 mm.","salesMarkdown":"The Siemens 6ES7972-0DA00-0AA0 is a SIMATIC DP RS485 terminating resistor designed to physically terminate PROFIBUS or MPI network segments. It screws onto the bus cable via its own screw terminal block for both supply voltage and PROFIBUS cables, drawing a typical 30 mA from a 24 V DC supply (permissible range 20.4 V to 28.8 V DC). The part handles transmission rates from 9.6 kbit/s up to 12 Mbit/s, covering the full PROFIBUS speed range. The 12 Mbit/s maximum transmission rate matches the top speed of PROFIBUS DP — if your network runs at 1.5 Mbit/s or 12 Mbit/s, this terminator works across the board. The 24 V DC supply with a 20.4 V to 28.8 V tolerance means it can share the same bus power supply as the rest of the segment without a separate regulator. The 60 mm width and 43 mm depth fit a standard DIN-rail footprint alongside other SIMATIC DP components. ## Environmental Range That covers most industrial cabinet environments, including unheated storage areas in cold climates. Power loss is minimal at 0.72 W, so no derating or forced cooling is needed in a typical panel.","metaTitle":"Siemens 6ES7972-0DA00-0AA0 RS485 Terminating Resistor, PROFI","metaDescription":"Siemens SIMATIC DP RS485 terminating resistor for PROFIBUS/MPI networks. 24V DC, 30mA, IP20, screw terminals. NRND status — sourced to order against RFQ. Max 70°C, min -40°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["PLC Accessories"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"43 mm","Width":"60 mm","Height":"70 mm","Operation, max.":"95 %; at +25 °C","Weight, approx.":"95 g","lifecycle_stage":"mature","Power loss, max.":"0.72 W","Rated value (DC)":"24 V","IP degree of protection":"IP20","Transmission rate, max.":"12 Mbit/s; 9.6 kbit/s to 12 Mbit/s","Current consumption, typ.":"30 mA","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Design of electrical connection for supply voltage":"Screw terminal block","Design of electrical connection for PROFIBUS cables":"Screw terminal block"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$44.44","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3ef80caf9dacbd45156637426f4cbd5d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=94269&mlfb=6ES7972-0DA00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7972-0DA00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 6ES7972-0DA00-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the maximum transmission rate of this terminating resistor?","answer":"It supports transmission rates from 9.6 kbit/s up to 12 Mbit/s, covering the full PROFIBUS DP speed range."},{"question":"What voltage does this terminator require?","answer":"It is rated for 24 V DC with a permissible range of 20.4 V to 28.8 V DC, drawing a typical 30 mA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7972-0DA00-0AA0","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/6ES7972-0DA00-0AA0 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}}