{"product_id":"siemens-6es7231-4hf50-0xb0-sm-1231-8ai-analog-input","title":"Siemens 6ES7231-4HF50-0XB0 SIMATIC S7-1200 SM 1231 8AI 14-Bit Analog Input Module","description":"\u003cp\u003eThe Siemens 6ES7231-4HF50-0XB0 is a SIMATIC S7-1200 SM 1231 analog input module with 8 channels of 14-bit differential voltage or current inputs (plus\/minus 10 V, 5 V, 2.5 V, or 0\/4-20 mA). It plugs onto the S7-1200 backplane bus and converts all 8 channels in a maximum cycle time of 1.25 ms. Input resistance is at least 1 MOhm on the voltage ranges.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e6ES7231-4HF50-0XB0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSIMATIC S7-1200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type designation\u003c\/td\u003e\n\u003ctd\u003eSM 1231, AI 8x 14 bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage, rated (DC)\u003c\/td\u003e\n\u003ctd\u003e24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog inputs\u003c\/td\u003e\n\u003ctd\u003e8, current or voltage differential inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle time (all channels), max.\u003c\/td\u003e\n\u003ctd\u003e1.25 ms at 400 Hz rejection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput ranges, voltage\u003c\/td\u003e\n\u003ctd\u003e+\/-10 V, +\/-5 V, +\/-2.5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput ranges, current\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA, 0 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution with overrange, max.\u003c\/td\u003e\n\u003ctd\u003e13 bit + sign\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBasic error limit, voltage (+\/-)\u003c\/td\u003e\n\u003ctd\u003e0.1 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBasic error limit, current (+\/-)\u003c\/td\u003e\n\u003ctd\u003e0.1 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIP degree of protection\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e30 x 125 x 100 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight, approx.\u003c\/td\u003e\n\u003ctd\u003e175 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\u003eUL\u003c\/li\u003e\n\u003cli\u003ecULus\u003c\/li\u003e\n\u003cli\u003eRCM\u003c\/li\u003e\n\u003cli\u003eKC\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eThis SM 1231 variant offers 8 configurable channels, useful when a single module needs to cover mixed voltage and current transducers on one backplane slot. Each channel independently selects between +\/-10 V, +\/-5 V, +\/-2.5 V, or 4-20 mA\/0-20 mA, so sensor types can be mixed without adding a second module. The 1.25 ms full-scan cycle time across all 8 channels, with 400 Hz noise rejection, keeps this module fast enough for process loops that poll analog values every control cycle.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eTypical uses include reading 4-20 mA process transmitters for pressure, level, and flow, plus\/minus 10 V analog sensors, and mixed sensor types on machine and process skids controlled by an S7-1200 CPU.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960781070619,"sku":"6ES7231-4HF50-0XB0","price":495.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6es7231-4hf50-0xb0-sm-1231-analog-input-module.png?v=1789662891","url":"https:\/\/stoklink.com\/products\/siemens-6es7231-4hf50-0xb0-sm-1231-8ai-analog-input","provider":"Stoklink","version":"1.0","type":"link"}