{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7231-5QD32-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7231-5QD32-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7231-5QD32-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7231-5QD32-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SM 1231 TC analog input module, 6ES7231-5QD32-0XB0, 8 thermocouple inputs, ±80 mV range, 24 V DC, active production.","salesMarkdown":"## Thermocouple input module for S7-1200 The Siemens 6ES7231-5QD32-0XB0 is an SM 1231 TC analog input module for the S7-1200 controller family. It accepts eight thermocouple inputs across types J, K, T, E, R, S, N, and C, with a voltage range of ±80 mV per the datasheet. The module is parameterizable — you configure the thermocouple type, wire-break detection, and diagnostic alarms per channel in the TIA Portal hardware config. ## Operating environment and approvals The 24 V DC supply draws a typical 1.5 W — negligible thermal load inside a crowded enclosure. Dimensions are 45 mm wide by 100 mm high by 75 mm deep, fitting the standard S7-1200 DIN-rail footprint with no extra clearance needed on the sides. Carries CE, cULus, UL, CSA, FM, KC, and marine approvals — covers most industrial and marine classification society requirements without a separate certification run.","metaTitle":"Siemens 6ES7231-5QD32-0XB0 SM 1231 TC Analog Input Module","metaDescription":"Siemens 6ES7231-5QD32-0XB0 SM 1231 TC analog input module for S7-1200. Supports 8 thermocouple types (J, K, T, E, R, S, N, C) ±80 mV.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog Input Modules"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"75 mm","Width":"45 mm","cULus":"Yes","title":"6ES7231-5QD32-0XB0","Alarms":"Yes","Height":"100 mm","Type B":"Yes","Type C":"Yes","Type E":"Yes","Type J":"Yes","Type K":"Yes","Type N":"Yes","Type R":"Yes","Type S":"Yes","Type T":"Yes","CE mark":"Yes","Current":"No","Plastic":"Yes","Voltage":"Yes","Resistance":"No","Wire-break":"Yes","FM approval":"Yes","KC approval":"Yes","UL approval":"Yes","description":"SIMATIC S7-1200, Analog input, SM 1231 TC, 4 AI thermocouples","CSA approval":"Yes","Thermocouple":"Yes; J, K, T, E, R, S, N, C, TXK/XK(L); voltage range: ±80 mV","For Maintenance":"Yes","Marine approval":"Yes","Operation, max.":"1 080 hPa","Operation, min.":"795 hPa","Parameterizable":"Yes","Weight, approx.":"180 g","lifecycle_stage":"current","-80 mV to +80 mV":"Yes","Diagnostic alarm":"Yes","Power loss, typ.":"1.5 W","Rated value (DC)":"24 V","Fall height, max.":"0.3 m; five times, in product package","Diagnostics function":"Yes; Can be read out","Measurement principle":"integrating","RCM (formerly C-TICK)":"Yes","Resistance thermometer":"No","IP degree of protection":"IP20","Number of analog inputs":"4; Thermocouples","Storage/transport, max.":"1 080 hPa","Storage/transport, min.":"660 hPa","Type TXK/TXK(L) to GOST":"Yes","For Status Of The Inputs":"Yes","Required Front Connector":"Yes","Current consumption, typ.":"40 mA","Vertical Installation, Max.":"50 °C","Vertical Installation, Min.":"-20 °C","Horizontal Installation, Max.":"60 °C","Horizontal Installation, Min.":"-20 °C","Monitoring the supply voltage":"Yes","Common mode interference, min.":"120 dB","from backplane bus 5 V DC, typ.":"80 mA","Integration time, parameterizable":"No","Input resistance (-80 mV to +80 mV)":"≥1 MOhm","SO2 at RH < 60% without condensation":"S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free","Operation at 25 °C without condensation, max.":"95 %","Temperature error (relative to input range), (+/-)":"25 °C ±0.1%, to 55 °C ±0.2% total measurement range","Resolution with overrange (bit including sign), max.":"15 bit; + sign","Technical unit for temperature measurement adjustable":"Degrees Celsius/degrees Fahrenheit","Interference voltage suppression for interference frequency f1 in Hz":"85 dB at 50 / 60 / 400 Hz","Permissible Input Voltage For Voltage Input (Destruction Limit), Max.":"±35 V","Repeat accuracy in steady state at 25 °C (relative to output range), (+/-)":"0.5 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$234.95 – $630.39","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6f904f27bb220e9703a70d89e1dd87ec.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=104125&mlfb=6ES7231-5QD32-0XB0"},"ai":{"faq":[{"question":"What thermocouple types does 6ES7231-5QD32-0XB0 support?","answer":"Supports types J, K, T, E, R, S, N, and C, with a voltage range of ±80 mV. The thermocouple type is parameterizable per channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7231-5QD32-0XB0","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/6ES7231-5QD32-0XB0 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}}