{"id":899,"count":4,"description":"Digital I\/O for the Micro PLC system handles on\/off signals in the compact controller and switches actuators such as relays, valves and indicator lamps. SCN supplies digital modules from Yaskawa of the M21, M22 and M23 series, including the M21-1BH00, M22-1BH00, M22-1HF10 and M23-1BH00. They are used in smaller machines and installations. Our engineers help you choose the right number of channels and module type for your application.","link":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/","name":"Digital I\/O","slug":"digital-io-micro-plc","taxonomy":"product_cat","parent":896,"meta":{"scn_kategori_text":""},"menu_order":20,"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Digital I\/O for Micro PLC \u2013 M21, M22, M23, Yaskawa | SCN<\/title>\n<meta name=\"description\" content=\"Digital I\/O modules of the M21, M22 and M23 series for the Yaskawa Micro PLC system, with technical support from SCN.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Digital I\/O for Micro PLC \u2013 M21, M22, M23, Yaskawa | SCN\" \/>\n<meta property=\"og:description\" content=\"Digital I\/O modules of the M21, M22 and M23 series for the Yaskawa Micro PLC system, with technical support from SCN.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/\" \/>\n<meta property=\"og:site_name\" content=\"SCN\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"CollectionPage\",\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/control-systems\\\/plc-systems\\\/micro-plc\\\/digital-io-micro-plc\\\/\",\"url\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/control-systems\\\/plc-systems\\\/micro-plc\\\/digital-io-micro-plc\\\/\",\"name\":\"Digital I\\\/O for Micro PLC \u2013 M21, M22, M23, Yaskawa | SCN\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/#website\"},\"description\":\"Digital I\\\/O modules of the M21, M22 and M23 series for the Yaskawa Micro PLC system, with technical support from SCN.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/control-systems\\\/plc-systems\\\/micro-plc\\\/digital-io-micro-plc\\\/#breadcrumb\"},\"inLanguage\":\"en-US\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/control-systems\\\/plc-systems\\\/micro-plc\\\/digital-io-micro-plc\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/scn.eu\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Products\",\"item\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Control Systems\",\"item\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/control-systems\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"PLC systems\",\"item\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/control-systems\\\/plc-systems\\\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"Micro PLC\",\"item\":\"https:\\\/\\\/scn.eu\\\/en\\\/product-category\\\/products\\\/control-systems\\\/plc-systems\\\/micro-plc\\\/\"},{\"@type\":\"ListItem\",\"position\":6,\"name\":\"Digital I\\\/O\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/scn.eu\\\/en\\\/\",\"name\":\"SCN\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/scn.eu\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/#organization\",\"name\":\"Sensor Control Nordic\",\"alternateName\":\"SCN\",\"url\":\"https:\\\/\\\/scn.eu\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/scn.eu\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/SCN-logo-scaled.png\",\"contentUrl\":\"https:\\\/\\\/scn.eu\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/SCN-logo-scaled.png\",\"width\":2560,\"height\":632,\"caption\":\"Sensor Control Nordic\"},\"image\":{\"@id\":\"https:\\\/\\\/scn.eu\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/sensor-control-nordic-ab\"],\"location\":[{\"@type\":\"Place\",\"name\":\"SCN Walsall\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"46 Hall Lane, Walsall Wood\",\"addressLocality\":\"Walsall\",\"postalCode\":\"WS9 9DP\",\"addressCountry\":\"GB\",\"addressRegion\":\"West Midlands\"},\"telephone\":\"+44 1634 300 900\"},{\"@type\":\"Place\",\"name\":\"SCN Stockholm\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Gustav III:s Boulevard 32\",\"addressLocality\":\"Solna\",\"postalCode\":\"169 73\",\"addressCountry\":\"SE\"},\"telephone\":\"+46 8 668 21 00\"},{\"@type\":\"Place\",\"name\":\"SCN Malm\u00f6\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"R\u00f6nnviksgatan 13\",\"addressLocality\":\"Malm\u00f6\",\"postalCode\":\"213 74\",\"addressCountry\":\"SE\"},\"telephone\":\"+46 40 688 02 00\"},{\"@type\":\"Place\",\"name\":\"SCN Sundsvall\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Trafikgatan 11\",\"addressLocality\":\"Sundsvall\",\"postalCode\":\"856 44\",\"addressCountry\":\"SE\"},\"telephone\":\"+46 60 740 75 81\"},{\"@type\":\"Place\",\"name\":\"SCN Helsinki\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Huopalahdentie 24A\",\"addressLocality\":\"Helsinki\",\"postalCode\":\"00350\",\"addressCountry\":\"FI\"},\"telephone\":\"+358 20 734 8600\"},{\"@type\":\"Place\",\"name\":\"SCN Tallinn\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Narva mnt 5\",\"addressLocality\":\"Tallinn\",\"postalCode\":\"10117\",\"addressCountry\":\"EE\"},\"telephone\":\"+372 651 4550\"},{\"@type\":\"Place\",\"name\":\"SCN Oslo\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Kristoffer Robins vei 13\",\"addressLocality\":\"Oslo\",\"postalCode\":\"0978\",\"addressCountry\":\"NO\"},\"telephone\":\"+47 23 88 89 62\"},{\"@type\":\"Place\",\"name\":\"SCN R\u00f8dekro\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"H\u00e6rvejen 8\",\"addressLocality\":\"R\u00f8dekro\",\"postalCode\":\"6230\",\"addressCountry\":\"DK\"},\"telephone\":\"+45 78 74 65 00\"},{\"@type\":\"Place\",\"name\":\"SCN Madrid\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Paseo de la Castellana, 200\",\"addressLocality\":\"Madrid\",\"postalCode\":\"28046\",\"addressCountry\":\"ES\",\"addressRegion\":\"Comunidad de Madrid\"},\"telephone\":\"+34 93 641 59 97\"},{\"@type\":\"Place\",\"name\":\"SCN Tarnowskie G\u00f3ry\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"ul. Ma\u0142a 1B\",\"addressLocality\":\"Tarnowskie G\u00f3ry\",\"postalCode\":\"42-605\",\"addressCountry\":\"PL\"},\"telephone\":\"+48 511 199 460\"}],\"email\":\"sales@scn.eu\",\"areaServed\":[\"SE\",\"NO\",\"DK\",\"FI\",\"EE\",\"GB\",\"PL\",\"ES\"],\"knowsLanguage\":[\"en\",\"sv\",\"da\",\"fi\",\"nb\",\"et\",\"pl\",\"es\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Digital I\/O for Micro PLC \u2013 M21, M22, M23, Yaskawa | SCN","description":"Digital I\/O modules of the M21, M22 and M23 series for the Yaskawa Micro PLC system, with technical support from SCN.","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:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/","og_locale":"en_US","og_type":"article","og_title":"Digital I\/O for Micro PLC \u2013 M21, M22, M23, Yaskawa | SCN","og_description":"Digital I\/O modules of the M21, M22 and M23 series for the Yaskawa Micro PLC system, with technical support from SCN.","og_url":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/","og_site_name":"SCN","twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"CollectionPage","@id":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/","url":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/","name":"Digital I\/O for Micro PLC \u2013 M21, M22, M23, Yaskawa | SCN","isPartOf":{"@id":"https:\/\/scn.eu\/en\/#website"},"description":"Digital I\/O modules of the M21, M22 and M23 series for the Yaskawa Micro PLC system, with technical support from SCN.","breadcrumb":{"@id":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/#breadcrumb"},"inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/digital-io-micro-plc\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/scn.eu\/en\/"},{"@type":"ListItem","position":2,"name":"Products","item":"https:\/\/scn.eu\/en\/product-category\/products\/"},{"@type":"ListItem","position":3,"name":"Control Systems","item":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/"},{"@type":"ListItem","position":4,"name":"PLC systems","item":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/"},{"@type":"ListItem","position":5,"name":"Micro PLC","item":"https:\/\/scn.eu\/en\/product-category\/products\/control-systems\/plc-systems\/micro-plc\/"},{"@type":"ListItem","position":6,"name":"Digital I\/O"}]},{"@type":"WebSite","@id":"https:\/\/scn.eu\/en\/#website","url":"https:\/\/scn.eu\/en\/","name":"SCN","description":"","publisher":{"@id":"https:\/\/scn.eu\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/scn.eu\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/scn.eu\/en\/#organization","name":"Sensor Control Nordic","alternateName":"SCN","url":"https:\/\/scn.eu\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/scn.eu\/en\/#\/schema\/logo\/image\/","url":"https:\/\/scn.eu\/wp-content\/uploads\/2026\/04\/SCN-logo-scaled.png","contentUrl":"https:\/\/scn.eu\/wp-content\/uploads\/2026\/04\/SCN-logo-scaled.png","width":2560,"height":632,"caption":"Sensor Control Nordic"},"image":{"@id":"https:\/\/scn.eu\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/sensor-control-nordic-ab"],"location":[{"@type":"Place","name":"SCN Walsall","address":{"@type":"PostalAddress","streetAddress":"46 Hall Lane, Walsall Wood","addressLocality":"Walsall","postalCode":"WS9 9DP","addressCountry":"GB","addressRegion":"West Midlands"},"telephone":"+44 1634 300 900"},{"@type":"Place","name":"SCN Stockholm","address":{"@type":"PostalAddress","streetAddress":"Gustav III:s Boulevard 32","addressLocality":"Solna","postalCode":"169 73","addressCountry":"SE"},"telephone":"+46 8 668 21 00"},{"@type":"Place","name":"SCN Malm\u00f6","address":{"@type":"PostalAddress","streetAddress":"R\u00f6nnviksgatan 13","addressLocality":"Malm\u00f6","postalCode":"213 74","addressCountry":"SE"},"telephone":"+46 40 688 02 00"},{"@type":"Place","name":"SCN Sundsvall","address":{"@type":"PostalAddress","streetAddress":"Trafikgatan 11","addressLocality":"Sundsvall","postalCode":"856 44","addressCountry":"SE"},"telephone":"+46 60 740 75 81"},{"@type":"Place","name":"SCN Helsinki","address":{"@type":"PostalAddress","streetAddress":"Huopalahdentie 24A","addressLocality":"Helsinki","postalCode":"00350","addressCountry":"FI"},"telephone":"+358 20 734 8600"},{"@type":"Place","name":"SCN Tallinn","address":{"@type":"PostalAddress","streetAddress":"Narva mnt 5","addressLocality":"Tallinn","postalCode":"10117","addressCountry":"EE"},"telephone":"+372 651 4550"},{"@type":"Place","name":"SCN Oslo","address":{"@type":"PostalAddress","streetAddress":"Kristoffer Robins vei 13","addressLocality":"Oslo","postalCode":"0978","addressCountry":"NO"},"telephone":"+47 23 88 89 62"},{"@type":"Place","name":"SCN R\u00f8dekro","address":{"@type":"PostalAddress","streetAddress":"H\u00e6rvejen 8","addressLocality":"R\u00f8dekro","postalCode":"6230","addressCountry":"DK"},"telephone":"+45 78 74 65 00"},{"@type":"Place","name":"SCN Madrid","address":{"@type":"PostalAddress","streetAddress":"Paseo de la Castellana, 200","addressLocality":"Madrid","postalCode":"28046","addressCountry":"ES","addressRegion":"Comunidad de Madrid"},"telephone":"+34 93 641 59 97"},{"@type":"Place","name":"SCN Tarnowskie G\u00f3ry","address":{"@type":"PostalAddress","streetAddress":"ul. Ma\u0142a 1B","addressLocality":"Tarnowskie G\u00f3ry","postalCode":"42-605","addressCountry":"PL"},"telephone":"+48 511 199 460"}],"email":"sales@scn.eu","areaServed":["SE","NO","DK","FI","EE","GB","PL","ES"],"knowsLanguage":["en","sv","da","fi","nb","et","pl","es"]}]}},"_links":{"self":[{"href":"https:\/\/scn.eu\/en\/wp-json\/wp\/v2\/product_cat\/899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scn.eu\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/scn.eu\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/scn.eu\/en\/wp-json\/wp\/v2\/product_cat\/896"}],"wp:post_type":[{"href":"https:\/\/scn.eu\/en\/wp-json\/wp\/v2\/product?product_cat=899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}