{"id":32792,"date":"2026-01-14T15:49:43","date_gmt":"2026-01-14T15:49:43","guid":{"rendered":"https:\/\/c2psu.com\/?post_type=product&p=32792"},"modified":"2026-03-01T12:55:25","modified_gmt":"2026-03-01T12:55:25","slug":"6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs","status":"publish","type":"product","link":"https:\/\/www.c2psu.com\/zh\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/","title":{"rendered":"6ES7431-1KF20-0AB0 Siemens Analog Input SM 431, Potential Isolation 8 Analog Inputs"},"content":{"rendered":"
<\/div>\n


Order number: 6ES7431-1KF20-0AB0<\/span><\/p>\n

\n
\n
\n
\n
SIMATIC S7-400, Analog Input SM 431, Potential Isolation 8 Analog Inputs; Resolution 14 bits U\/I\/Resistance 8 Analog Inputs, Cycle Time 0.416 MS<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n





<\/div>\n
\n
<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

The Siemens 6ES7431-1KF20-0AB0 (SM 431) is an analog input module for the SIMATIC S7-400 PLC family, providing\u00a08 analog inputs<\/strong>\u00a0with\u00a013-bit resolution<\/strong>\u00a0(including sign) for temperature and voltage measurements . It supports\u00a0resistance thermometer (RTD)<\/strong>\u00a0types including PT100, Ni100, and PT200 with linearization, as well as various\u00a0thermocouple<\/strong>\u00a0types (B, E, J, K, L, N, R, S, T, U) with internal or external compensation . It also supports voltage measurement ranges (0-80mV, \u00b180mV, 0-250mV, \u00b1250mV, 0-1V, \u00b11V) . Conversion time is approximately 20 ms per channel for temperature measurements . The inputs are electrically isolated in groups of 8 channels, with a backplane bus current consumption of 300 mA . The module supports programmable diagnostic interrupts and includes a front connector for wiring (screw-type terminals sold separately) . Suitable for use in S7-400 racks, it has a\u00a0discontinued lifecycle status (PM410)<\/strong>\u00a0and is intended as a spare part for legacy temperature monitoring systems .<\/p>\n

\n
<\/div>\n<\/div>","protected":false},"featured_media":32794,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_elementor_edit_mode":"","_elementor_template_type":"","_elementor_data":"","_elementor_page_settings":null,"_elementor_conditions":[]},"etheme_brands":[{"term_id":5558,"name":"SIEMENS","slug":"siemens","term_group":0,"term_taxonomy_id":5558,"taxonomy":"brand","description":"Siemens AG is a\u00a0German multinational technology conglomerate<\/strong>\u00a0headquartered in Munich, Germany. As a global powerhouse in industrial manufacturing and technology, it operates across the digital industrial, smart infrastructure, mobility, and healthcare sectors.\r\n\r\nAt Siemens, our purpose is to create technology to transform the everyday, for everyone. We are a leading technology company focused on industry, infrastructure, transport, and healthcare, driven by the belief that sustainability is good business and serves as a powerful force for good.\r\n
\r\n
<\/div>\r\n<\/div>","parent":0,"count":100,"filter":"raw"}],"product_brand":[610],"product_cat":[605],"product_tag":[3556,3575,3559,526,3576,3577,3578,3479],"class_list":{"0":"post-32792","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"brand-siemens","7":"product_brand-siemens","8":"product_cat-programmable-logic-controllers-plcs","9":"product_tag-3556","10":"product_tag-6es7431-1kf20-0ab0","11":"product_tag-analog","12":"product_tag-input","13":"product_tag-inputs","14":"product_tag-isolation","15":"product_tag-potential","16":"product_tag-siemens-5","17":"pa_option-6es7431-1kf20-0ab0-2","19":"first","20":"instock","21":"sale","22":"purchasable","23":"product-type-simple"},"acf":[],"yoast_head":"\nSiemens 6ES7431-1KF20-0AB0 SM 431 Analog Input RTD Module<\/title>\n<meta name=\"description\" content=\"The Siemens 6ES7431-1KF20-0AB0 (SM 431) is an analog input module for the SIMATIC S7-400 PLC family, providing\u00a08 analog inputs\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.c2psu.com\/zh\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/\" \/>\n<meta property=\"og:locale\" content=\"zh_TW\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"6ES7431-1KF20-0AB0 Siemens Analog Input SM 431, Potential Isolation 8 Analog Inputs\" \/>\n<meta property=\"og:description\" content=\"The Siemens 6ES7431-1KF20-0AB0 (SM 431) is an analog input module for the SIMATIC S7-400 PLC family, providing\u00a08 analog inputs\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.c2psu.com\/zh\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/\" \/>\n<meta property=\"og:site_name\" content=\"C2PSU\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-01T12:55:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Price\" \/>\n\t<meta name=\"twitter:data1\" content=\"$844.30\" \/>\n\t<meta name=\"twitter:label2\" content=\"Availability\" \/>\n\t<meta name=\"twitter:data2\" content=\"In stock\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/\",\"url\":\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/\",\"name\":\"Siemens 6ES7431-1KF20-0AB0 SM 431 Analog Input RTD Module\",\"isPartOf\":{\"@id\":\"https:\/\/www.c2psu.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg\",\"datePublished\":\"2026-01-14T15:49:43+00:00\",\"dateModified\":\"2026-03-01T12:55:25+00:00\",\"description\":\"The Siemens 6ES7431-1KF20-0AB0 (SM 431) is an analog input module for the SIMATIC S7-400 PLC family, providing\u00a08 analog inputs\u00a0\",\"breadcrumb\":{\"@id\":\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#breadcrumb\"},\"inLanguage\":\"zh-TW\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-TW\",\"@id\":\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#primaryimage\",\"url\":\"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg\",\"contentUrl\":\"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg\",\"width\":800,\"height\":800,\"caption\":\"6ES7431-1KF20-0AB0\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.c2psu.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\/\/www.c2psu.com\/products\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"6ES7431-1KF20-0AB0 Siemens Analog Input SM 431, Potential Isolation 8 Analog Inputs\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.c2psu.com\/#website\",\"url\":\"https:\/\/www.c2psu.com\/\",\"name\":\"C2PSU\",\"description\":\"Industrial electronics\",\"publisher\":{\"@id\":\"https:\/\/www.c2psu.com\/#organization\"},\"alternateName\":\"C2PSU-Industrial electronics\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.c2psu.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"zh-TW\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.c2psu.com\/#organization\",\"name\":\"C2PSU\",\"url\":\"https:\/\/www.c2psu.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-TW\",\"@id\":\"https:\/\/www.c2psu.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.c2psu.com\/wp-content\/uploads\/2025\/11\/C2PSU.png\",\"contentUrl\":\"https:\/\/www.c2psu.com\/wp-content\/uploads\/2025\/11\/C2PSU.png\",\"width\":755,\"height\":374,\"caption\":\"C2PSU\"},\"image\":{\"@id\":\"https:\/\/www.c2psu.com\/#\/schema\/logo\/image\/\"},\"hasMerchantReturnPolicy\":{\"@type\":\"MerchantReturnPolicy\",\"merchantReturnLink\":\"https:\/\/www.c2psu.com\/zh\/%e9%80%80%e6%ac%be\/\"}}]}<\/script>\n<meta property=\"product:price:amount\" content=\"844.30\" \/>\n<meta property=\"product:price:currency\" content=\"USD\" \/>\n<meta property=\"og:availability\" content=\"instock\" \/>\n<meta property=\"product:availability\" content=\"instock\" \/>\n<meta property=\"product:retailer_item_id\" content=\"836766026215_6ES7431-1KF20-0AB0\" \/>\n<meta property=\"product:condition\" content=\"new\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Siemens 6ES7431-1KF20-0AB0 SM 431 Analog Input RTD Module","description":"The Siemens 6ES7431-1KF20-0AB0 (SM 431) is an analog input module for the SIMATIC S7-400 PLC family, providing\u00a08 analog inputs\u00a0","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.c2psu.com\/zh\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/","og_locale":"zh_TW","og_type":"article","og_title":"6ES7431-1KF20-0AB0 Siemens Analog Input SM 431, Potential Isolation 8 Analog Inputs","og_description":"The Siemens 6ES7431-1KF20-0AB0 (SM 431) is an analog input module for the SIMATIC S7-400 PLC family, providing\u00a08 analog inputs\u00a0","og_url":"https:\/\/www.c2psu.com\/zh\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/","og_site_name":"C2PSU","article_modified_time":"2026-03-01T12:55:25+00:00","og_image":[{"width":800,"height":800,"url":"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Price":"$844.30","Availability":"In stock"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/","url":"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/","name":"Siemens 6ES7431-1KF20-0AB0 SM 431 Analog Input RTD Module","isPartOf":{"@id":"https:\/\/www.c2psu.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#primaryimage"},"image":{"@id":"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#primaryimage"},"thumbnailUrl":"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg","datePublished":"2026-01-14T15:49:43+00:00","dateModified":"2026-03-01T12:55:25+00:00","description":"The Siemens 6ES7431-1KF20-0AB0 (SM 431) is an analog input module for the SIMATIC S7-400 PLC family, providing\u00a08 analog inputs\u00a0","breadcrumb":{"@id":"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#breadcrumb"},"inLanguage":"zh-TW","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/"]}]},{"@type":"ImageObject","inLanguage":"zh-TW","@id":"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#primaryimage","url":"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg","contentUrl":"https:\/\/www.c2psu.com\/wp-content\/uploads\/2026\/01\/products-942233b5_12093288-be4d-4cc7-bf07-4fba1f358f16.jpg","width":800,"height":800,"caption":"6ES7431-1KF20-0AB0"},{"@type":"BreadcrumbList","@id":"https:\/\/www.c2psu.com\/product\/6es7431-1kf20-0ab0-siemens-analog-input-sm-431-8-analog-inputs\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.c2psu.com\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/www.c2psu.com\/products\/"},{"@type":"ListItem","position":3,"name":"6ES7431-1KF20-0AB0 Siemens Analog Input SM 431, Potential Isolation 8 Analog Inputs"}]},{"@type":"WebSite","@id":"https:\/\/www.c2psu.com\/#website","url":"https:\/\/www.c2psu.com\/","name":"C2PSU","description":"Industrial electronics","publisher":{"@id":"https:\/\/www.c2psu.com\/#organization"},"alternateName":"C2PSU-Industrial electronics","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.c2psu.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"zh-TW"},{"@type":"Organization","@id":"https:\/\/www.c2psu.com\/#organization","name":"C2PSU","url":"https:\/\/www.c2psu.com\/","logo":{"@type":"ImageObject","inLanguage":"zh-TW","@id":"https:\/\/www.c2psu.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.c2psu.com\/wp-content\/uploads\/2025\/11\/C2PSU.png","contentUrl":"https:\/\/www.c2psu.com\/wp-content\/uploads\/2025\/11\/C2PSU.png","width":755,"height":374,"caption":"C2PSU"},"image":{"@id":"https:\/\/www.c2psu.com\/#\/schema\/logo\/image\/"},"hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","merchantReturnLink":"https:\/\/www.c2psu.com\/zh\/%e9%80%80%e6%ac%be\/"}}]},"product_price_amount":"844.30","product_price_currency":"USD","og_availability":"instock","product_availability":"instock","product_retailer_item_id":"836766026215_6ES7431-1KF20-0AB0","product_condition":"new"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/product\/32792","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/comments?post=32792"}],"version-history":[{"count":2,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/product\/32792\/revisions"}],"predecessor-version":[{"id":40651,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/product\/32792\/revisions\/40651"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/media\/32794"}],"wp:attachment":[{"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/media?parent=32792"}],"wp:term":[{"taxonomy":"brand","embeddable":true,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/etheme_brands?post=32792"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/product_brand?post=32792"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/product_cat?post=32792"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.c2psu.com\/zh\/wp-json\/wp\/v2\/product_tag?post=32792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}