{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7231-5QF30-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7231-5QF30-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7231-5QF30-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7231-5QF30-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1200, SM 1231 TC, analog input module, 8 AI for thermocouples, spare part, 24 V DC, 45 x 100 x 75 mm.","salesMarkdown":"## 8 thermocouple inputs on a 45 mm slice The Siemens 6ES7231-5QF30-0XB0 is a spare-part SM 1231 TC analog input module for the S7-1200 system, providing eight thermocouple inputs on a 45 mm wide DIN-rail slice. It accepts types J, K, T, E, R, S, N, and C, plus TXK/XK(L), with a ±80 mV voltage range — covering the common process and high-temperature thermocouple families in a single module. Rated supply is 24 V DC, typical power loss 1.5 W, and the module carries CE and FM approvals for industrial control panels. ## Thermocouple types and diagnostic depth The module supports thermocouple types J, K, T, E, R, S, N, and C, with a parameterizable cold-junction compensation accuracy of ±1.5 °C. Diagnostic alarm and wire-break detection are built in, and the diagnostics function can be read out over the backplane — useful for fault isolation on a line without pulling the module. The measurement principle is integrating, and the input range is ±80 mV, which covers the full output span of standard thermocouples at process temperatures. ## DIN-rail footprint and ambient range Dimensions are 45 mm wide, 100 mm high, and 75 mm deep — it occupies one S7-1200 slot width and mounts directly on the DIN rail alongside the CPU and other signal modules. Atmospheric pressure range is 795 hPa to 1080 hPa, covering altitudes up to about 2000 m without derating.","metaTitle":"Siemens 6ES7231-5QF30-0XB0 SM 1231 TC, 8 AI Thermocouple","metaDescription":"Siemens 6ES7231-5QF30-0XB0 SM 1231 TC analog input module, 8 thermocouple inputs, types J/K/T/E/R/S/N/C, ±80 mV, 24 V DC, IP20. Current lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Analog Input Modules"],"specifications":{"Max.":"70 °C","Min.":"-40 °C","Depth":"75 mm","Width":"45 mm","Alarms":"Yes","Height":"100 mm","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","Plastic":"Yes","Resistance":"Yes","Wire-break":"Yes","FM approval":"Yes","Thermocouple":"Yes; J, K, T, E, R, S, N, C, TXK/XK(L); voltage range: ±80 mV","For Maintenance":"Yes","Operation, max.":"1 080 hPa","Operation, min.":"795 hPa","Parameterizable":"Yes","Weight, approx.":"220 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","Cold Connection Point":"±1,5 °C","Measurement principle":"integrating","RCM (formerly C-TICK)":"Yes","Resistance thermometer":"No","IP degree of protection":"IP20","Number of analog inputs":"8; 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.":"80 mA","Vertical Installation, Max.":"45 °C","Vertical Installation, Min.":"0 °C","Horizontal Installation, Max.":"55 °C","Horizontal Installation, Min.":"0 °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":"$722.11","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4e1b047c88d7a611c8aaabc85bee0854.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=324881&mlfb=6ES7231-5QF30-0XB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7231-5QF30-0XB0/alternatives.json"},"ai":{"faq":[{"question":"What thermocouple types does 6ES7231-5QF30-0XB0 support?","answer":"It supports types J, K, T, E, R, S, N, and C, plus TXK/XK(L), with a ±80 mV input range."},{"question":"Is 6ES7231-5QF30-0XB0 compatible with Siemens S7-1200?","answer":"Yes, it is a SIMATIC S7-1200 SM 1231 TC analog input module designed for the S7-1200 system, fitting the standard DIN-rail backplane."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7231-5QF30-0XB0","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/6ES7231-5QF30-0XB0 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}}