{"id":14026,"date":"2024-03-25T12:29:53","date_gmt":"2024-03-25T12:29:53","guid":{"rendered":"https:\/\/www.novotek.com\/se\/?post_type=insights&#038;p=14026"},"modified":"2025-03-04T14:48:48","modified_gmt":"2025-03-04T14:48:48","slug":"vad-ar-opc-och-opc-ua","status":"publish","type":"insights","link":"https:\/\/www.novotek.com\/se\/insight\/vad-ar-opc-och-opc-ua\/","title":{"rendered":"Vad \u00e4r OPC och OPC UA?"},"content":{"rendered":"<div class=\"container-md paragraph  \">\n<p>Vad \u00e4r skillnaden mellan den klassiska OPC-standarden och OPC UA?<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Den f\u00f6rsta OPC-standarden kom ut p\u00e5 marknaden 1996 och \u00e4r skapat f\u00f6r att s\u00e4kerst\u00e4lla kommunikationsfl\u00f6det mellan enheter och system fr\u00e5n olika leverant\u00f6rer. Det fanns ett stort behov av en \u00f6ppen l\u00f6sning som gjorde det m\u00f6jligt f\u00f6r utrustning och system fr\u00e5n olika leverant\u00f6rer att kommunicera med varandra. Redan tv\u00e5 \u00e5r senare var OPC branschstandard och <strong><a href=\"https:\/\/opcfoundation.org\/about\/what-is-opc\/\" target=\"_blank\" rel=\"noreferrer noopener\">OPC Foundation<\/a><\/strong> (som l\u00e5g bakom kommunikationsgr\u00e4nssnittet) grundades som en ideell organisation med ansvar f\u00f6r utveckling och underh\u00e5ll av OPC.<\/p>\n<\/div>\n\n<div class=\"container media-text  align\">\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\"><div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Klassiska OPC &#8211; standarder<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>De f\u00f6rsta OPC-standarderna baserades p\u00e5 Microsoft-teknik och var begr\u00e4nsade till Windows-operativsystem. OPC stod f\u00f6r OLE (Object Linking and Embedding) f\u00f6r Process Control, och data distribuerades mellan mjukvarusystem via COM\/DCOM.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>OPC DA (Data Access), var den f\u00f6rsta OPC-standarden som kom ut p\u00e5 marknaden. I b\u00f6rjan av 2000-talet blev flera OPC-standarder tillg\u00e4ngliga: OPC A&amp;E (Alarm &amp; Events), OPC HDA (Historical Data Access), OPC XML\/CSV och OPC DX (Data Exchange). I vissa fall kan en OPC-server ha flera av dessa standarder implementerade. OPC DA \u00e4r den mest utbredda standarden och anv\u00e4nds fortfarande i m\u00e5nga fabriker och anl\u00e4ggningar.<\/p>\n<\/div><\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"813\" height=\"1024\" src=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-02.png\" alt=\"\" class=\"wp-image-14145 size-full\" srcset=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-02.png 813w, https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-02-238x300.png 238w, https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-02-768x967.png 768w\" sizes=\"auto, (max-width: 813px) 100vw, 813px\" \/><\/figure><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\">Data Access (DA)<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p><strong>OPC DA<\/strong> skickar realtidsv\u00e4rden fr\u00e5n PLC:er till HMI\/SCADA-system. Information i ett telegram best\u00e5r av Taggnamn, V\u00e4rde, Tidst\u00e4mpel och Datakvalit\u00e9.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\">Alarms and Events (AE)<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p><strong>OPC AE<\/strong> skickar en tidsst\u00e4mpel och ett meddelande om larm. Meddelandet beskriver n\u00e4r h\u00e4ndelsen eller larmet avl\u00e4stes samt vilket larm eller h\u00e4ndelse det var.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\">Historical Data Access (HDA)<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p><strong>OPC HDA<\/strong> inneh\u00e5ller historisk data som du kan fr\u00e5ga och st\u00f6der \u00f6verf\u00f6ring av stora m\u00e4ngder data fr\u00e5n en eller flera taggar. OPC HDA skapades f\u00f6r att f\u00e5 ett holistiskt s\u00e4tt att extrahera data fr\u00e5n processdatabaser. Protokollet anv\u00e4nds inte i stor utstr\u00e4ckning idag.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\">XML\/CSV<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p><strong>OPC XML\/CSV<\/strong> g\u00f6r processdata tillg\u00e4nglig i alla operativsystem som anv\u00e4nder XML\/CSV. OPC XML\/CSV g\u00f6r det m\u00f6jligt att spara OPC-data som XML eller CSV-filer. Datat kan sedan l\u00e4sas in t.ex. Excel.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\">Data Exchange (DX) <\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p><strong>OPC DX<\/strong> tillhandah\u00e5ller en standardiserad metod f\u00f6r att \u00f6verf\u00f6ra data mellan olika OPC-servrar och andra system s\u00e5som PLC:er, HMI\/SCADA-system och PC:er.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container media-text  align\">\n<div class=\"wp-block-media-text has-media-on-the-right is-stacked-on-mobile\"><div class=\"wp-block-media-text__content\"><div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Den nya standarden <br>&#8211; OPC UA<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>N\u00e4r fler operativsystem blev mer popul\u00e4ra kom behovet av en plattformsoberoende OPC-l\u00f6sning och 2006 lanserade OPC Foundation <strong>OPC UA, &#8211; \u200b\u200bUnified Architecture<\/strong>. Till skillnad fr\u00e5n de klassiska OPC-standarderna \u00e4r OPC UA inte baserad p\u00e5 Microsoft-teknik, och servern kan k\u00f6ras p\u00e5 Apple, Linux och Windows. Kommunikation \u00f6ver n\u00e4tverk \u00e4r l\u00e4tt.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Dessutom ville OPC-leverant\u00f6rerna ha en enda plattform med tillg\u00e5ng till alla OPC-modeller. L\u00f6sningen kommer med funktioner f\u00f6r att anv\u00e4nda strukturer och modeller, som g\u00f6r att taggar kan grupperas och hanteras som ett objekt. <\/p>\n<\/div><\/div><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"813\" height=\"1024\" src=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-03.png\" alt=\"OPC UA\" class=\"wp-image-14144 size-full\" srcset=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-03.png 813w, https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-03-238x300.png 238w, https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/OPC_vs_OPC_UA-03-768x967.png 768w\" sizes=\"auto, (max-width: 813px) 100vw, 813px\" \/><\/figure><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\">Informationsmodellering<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>OPC UA har funktioner som g\u00f6r att du kan anv\u00e4nda strukturer och modeller. Dessa modeller kan definieras av leverant\u00f6rer eller protokoll. OPC UA-servrar kan ocks\u00e5 inneh\u00e5lla strukturer med mer komplexa relationer mellan taggar och noder. Detta g\u00f6r det m\u00f6jligt att ha datastrukturer d\u00e4r vissa data alltid grupperas och hanteras som en enhet. Detta \u00e4r anv\u00e4ndbart n\u00e4r du vill vara s\u00e4ker p\u00e5 att dataupps\u00e4ttningar h\u00e4mtas samtidigt.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h3 class=\"wp-block-heading\">Kommunikation<\/h3>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Kommunikationen i OPC UA \u00e4r uppbyggd av kommunikationslager som \u00e4r placerade ovanf\u00f6r standardtransportlagret TCP\/IP. Ovanf\u00f6r kommunikationslagret finns tv\u00e5 lager som underh\u00e5ller och hanterar en s\u00e4ker kanal mellan server och klient. Dessa lager \u00e4r byggda p\u00e5 SSL, HTTP eller HTTPS. Kommunikationsskiktet s\u00e4krar hela kommunikationskanalen, &#8211; fr\u00e5n \u00e5tkomst till eventuella korrupta data. X.509-certifikat kan utbytas mellan server och klient.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>L\u00f6sningen anv\u00e4nds fr\u00e4mst f\u00f6r att bygga en bro mellan olika OPC DA-servrar och DA-klienter, s\u00e5 kallad &#8221;tunneling&#8221;. Detta m\u00f6jligg\u00f6r n\u00e4tverksbaserad kommunikation.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md paragraph  aligncenter\">\n<p class=\"has-text-align-center has-background\" style=\"background-color:#f3f3f3\">Idag s\u00e5 v\u00e4ljer fler och fler att strukturera data i en <strong>Unified Namespace<\/strong> (UNS). <br>Vill du l\u00e4sa mer om UNS,<a href=\"https:\/\/www.novotek.com\/se\/insight\/vad-ar-unified-namespace-uns\/\"> ta del av v\u00e5r artikel h\u00e4r<\/a>.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:65px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md image  \">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"187\" src=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/sites\/2\/Startpage\/Insights\/OPC\/AdobeStock_667406554-OPC-UA_1536x280px-1024x187.jpg\" alt=\"OPC UA Fondation\" class=\"wp-image-14028\" srcset=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/AdobeStock_667406554-OPC-UA_1536x280px-1024x187.jpg 1024w, https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/AdobeStock_667406554-OPC-UA_1536x280px-300x55.jpg 300w, https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/AdobeStock_667406554-OPC-UA_1536x280px-768x140.jpg 768w, https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/AdobeStock_667406554-OPC-UA_1536x280px.jpg 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Ska du v\u00e4lja klassisk OPC eller OPC UA?<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>M\u00e5nga industrif\u00f6retag anv\u00e4nder fortfarande klassiska OPC-standarder f\u00f6r industriell kommunikation. Dessa system har ofta implementerats innan OPC UA blev tillg\u00e4ngliga, eller har \u00e4ldre system\/utrustning som inte kan kommunicera med OPC UA. S\u00e5 l\u00e4nge systemet fungerar korrekt och ingen s\u00e4kerhet beh\u00f6vs \u00e4r detta inget problem. Har du krav p\u00e5 s\u00e4kerhet beh\u00f6ver du g\u00e5 \u00f6ver till OPC UA. <\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>F\u00f6r nya OPC-implementeringar \u00e4r OPC UA ett sj\u00e4lvklart val. OPC UA kommer med samma funktioner som klassiska OPC-standarder, erbjuder anslutning till flera operativsystem och har b\u00e4ttre s\u00e4kerhet. <\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>V\u00e5r rekommendation \u00e4r att om m\u00f6jligt alltid anv\u00e4nda OPC UA. <\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Vi erbjuder b\u00e5de klassisk OPC och OPC UA fr\u00e5n v\u00e5ra leverant\u00f6rer, med <strong><a href=\"https:\/\/www.novotek.com\/se\/losningar-och-produkter\/opc-industriell-kommunikation\/kepserverex\/\">KEPServerEX fr\u00e5n Kepware<\/a><\/strong> och <strong><a href=\"https:\/\/www.novotek.com\/se\/losningar-och-produkter\/opc-industriell-kommunikation\/opc-router\/\">OPC Router fr\u00e5n Inray<\/a><\/strong>.<\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Har du fr\u00e5gor om industriell kommunikation eller de olika OPC-standarderna? Vi hj\u00e4lper dig hitta r\u00e4tt OPC-l\u00f6sning! <strong><a href=\"https:\/\/www.novotek.com\/se\/kontakta-oss\/\">Kontakta oss.<\/a><\/strong><\/p>\n<\/div>\n\n<div class=\"container-md spacer  \">\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div>\n\n<div class=\"container-md columns  alignwide\">\n<div class=\"wp-block-columns alignwide is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\"><div class=\"container-md column  \">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"container-md heading  \">\n<h4 class=\"wp-block-heading has-text-align-left has-black-color has-text-color\" id=\"h-vill-du-prata-mer-om-unified-namespace\">L\u00e4s mer om OPC<\/h4>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>L\u00e4s e-boken om skapandet av OPC Foundation p\u00e5 1990-talet, utvecklingen fr\u00e5n OPC till OPC UA och f\u00f6rdelarna som uppst\u00e5tt.<\/p>\n<\/div><\/div>\n<\/div>\n\n<div class=\"container-md column  \">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><div class=\"container-md\">\n  <div class=\"download-files\">\n          <strong>Ladda ner e-boken<\/strong>\n    \n    \n          <ul>\n                  <li>\n                          \n                <div class=\"download-single-file-thumbnail\">\n                  <a href=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/Understanding_OPC_eBook.pdf\" download><img decoding=\"async\" class=\"svg-primary\" src=\"https:\/\/www.novotek.com\/se\/wp-content\/themes\/novotek-multi\/assets\/svg\/file.svg\"><\/a>\n                <\/div>\n\n                <div class=\"download-single-file-content\">\n                  <a href=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/Understanding_OPC_eBook.pdf\" download><strong>Understanding_OPC_eBook<\/strong><\/a>\n\n                  <div class=\"download-single-file-details\">\n                  <a href=\"https:\/\/www.novotek.com\/se\/wp-content\/uploads\/sites\/2\/Startpage\/Insights\/OPC\/Understanding_OPC_eBook.pdf\" download>PDF<\/a>\n                  <\/div>\n                <\/div>\n\n                          \n          <\/li>\n              <\/ul>\n      <\/div>\n<\/div>\n\n\n<script>\n    function setCookie(key, value, expiry) {\n        var expires = new Date();\n        expires.setTime(expires.getTime() + (expiry * 24 * 60 * 60 * 1000));\n        document.cookie = key + '=' + value + ';expires=' + expires.toUTCString() + '; path=\/';\n    }\n\n    jQuery(document).ready(function($) {\n      $('.btn-primary').click(function() {\n        console.log('yes');\n        setCookie('firstname', $('input.firstname').val(), '30');\n        setCookie('lastname', $('input.lastname').val(), '30');\n        setCookie('email', $('input.email').val(), '30');\n      });\n    });\n<\/script><\/div>\n<\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>OPC s\u00e4kerst\u00e4ller kommunikationsfl\u00f6det mellan enheter och system fr\u00e5n olika leverant\u00f6rer. Vad \u00e4r skillnaden mellan den OPC och OPC UA?<\/p>\n","protected":false},"featured_media":0,"template":"","insight_category":[],"class_list":["post-14026","insights","type-insights","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vad \u00e4r OPC och OPC UA? - Novotek Sverige AB<\/title>\n<meta name=\"description\" content=\"OPC s\u00e4kerst\u00e4ller kommunikationsfl\u00f6det mellan enheter och system fr\u00e5n olika leverant\u00f6rer. 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