{"id":38437,"date":"2026-09-30T10:06:06","date_gmt":"2026-09-30T10:06:06","guid":{"rendered":"https:\/\/dev.accevo.com\/glossary\/what-is-opc-da\/"},"modified":"2026-09-30T10:09:10","modified_gmt":"2026-09-30T10:09:10","slug":"what-is-opc-da","status":"publish","type":"post","link":"https:\/\/accevo.com\/pl\/glossary\/what-is-opc-da\/","title":{"rendered":"What Is OPC DA?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">OPC Data Access (OPC DA) is an OPC Classic specification for exchanging current industrial process values between a server and client, including timestamps and quality information. It uses Microsoft COM\/DCOM technology and is often found in older control and data-collection systems. OPC UA is a newer, platform-independent architecture with a broader information model and security framework. A site moving from OPC DA to OPC UA should check the actual tags, data meaning, access rights and gateway behaviour.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Zobacz te\u017c: <a href=\"https:\/\/accevo.com\/pl\/glosariusz\/czym-jest-opc-ua\/\">OPC UA<\/a> \u00b7 <a href=\"https:\/\/opcfoundation.org\/about\/opc-technologies\/opc-classic\/\" rel=\"nofollow noopener\" target=\"_blank\">OPC Foundation: OPC Classic<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>OPC Data Access is a classic OPC standard for exchanging live industrial values, timestamps and quality information.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"wpai_generated_summary":"","footnotes":""},"categories":[32],"tags":[],"class_list":["post-38437","post","type-post","status-publish","format-standard","hentry","category-glossary"],"_links":{"self":[{"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/posts\/38437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/comments?post=38437"}],"version-history":[{"count":0,"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/posts\/38437\/revisions"}],"wp:attachment":[{"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/media?parent=38437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/categories?post=38437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/accevo.com\/pl\/wp-json\/wp\/v2\/tags?post=38437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}