{"product_id":"siemens-6es7231-5qf32-0xb0-sm1231-8ai-tc-plc-io-module","title":"Siemens 6ES7231-5QF32-0XB0 SIMATIC S7-1200 SM 1231 TC 8AI Thermocouple PLC I\/O Module","description":"\u003cp\u003eSiemens 6ES7231-5QF32-0XB0 is a SIMATIC S7-1200 SM 1231 analog input module with 8 thermocouple channels, 15-bit plus sign resolution, and support for 10 thermocouple types (J, K, T, E, R, S, B, N, C, TXK\/TXK(L)). It runs from a 24 V DC supply, draws 40 mA typical, and adds diagnostic wire-break and supply-voltage monitoring per channel.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6ES7231-5QF32-0XB0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSIMATIC S7-1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Designation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSM 1231, AI 8x16 bit TC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Analog Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 (thermocouple)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermocouple Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJ, K, T, E, R, S, B, N, C, TXK\/TXK(L) to GOST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Input Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/-80 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 bit + sign\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 mA typ.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Loss\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5 W typ.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Error\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% (to 25 C) \/ +\/-0.2% (to 55 C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon Mode Interference Suppression\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 dB min.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (W x H x D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 x 100 x 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e220 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eCertifications \u0026amp; Standards\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCE\u003c\/li\u003e\n\u003cli\u003eCSA\u003c\/li\u003e\n\u003cli\u003eUL\u003c\/li\u003e\n\u003cli\u003ecULus\u003c\/li\u003e\n\u003cli\u003eFM\u003c\/li\u003e\n\u003cli\u003eRCM\u003c\/li\u003e\n\u003cli\u003eKC\u003c\/li\u003e\n\u003cli\u003eMarine\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eThe 8-channel TC variant covers ten thermocouple types on one module, so a single SM 1231 TC can serve mixed-sensor applications - K-type on one channel, J-type on another - without separate voltage-input modules. 15-bit plus sign resolution and built-in wire-break diagnostics per channel matter where a broken thermocouple lead must be flagged rather than silently read as a stuck value. If the application only needs standard voltage or current-loop sensors, the SM 1231 voltage\/current variant is the simpler, less expensive choice.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eUsed for temperature monitoring and closed-loop control on S7-1200 stations - ovens, extruders, kilns, and process heating skids - where multiple thermocouple types are already installed across sensors.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960782184731,"sku":"6ES7231-5QF32-0XB0","price":625.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6es7231-5qf32-0xb0-sm1231-8ai-tc-plc-io-module.png?v=1789663887","url":"https:\/\/stoklink.com\/products\/siemens-6es7231-5qf32-0xb0-sm1231-8ai-tc-plc-io-module","provider":"Stoklink","version":"1.0","type":"link"}