{"id":17335,"date":"2026-01-26T11:47:56","date_gmt":"2026-01-26T14:47:56","guid":{"rendered":"https:\/\/kb.elipse.com.br\/?p=17335"},"modified":"2026-01-26T11:47:56","modified_gmt":"2026-01-26T14:47:56","slug":"driver-opc-ua-e3-performance-solucao-problemas","status":"publish","type":"post","link":"https:\/\/kb.elipse.com.br\/en\/driver-opc-ua-e3-performance-solucao-problemas\/","title":{"rendered":"Dicas de performance e solu\u00e7\u00e3o de problemas ao utilizar o driver OPC UA no E3."},"content":{"rendered":"<h2 data-start=\"195\" data-end=\"207\">Descri\u00e7\u00e3o<\/h2>\n<p data-start=\"209\" data-end=\"414\">Ao utilizar o driver <strong data-start=\"230\" data-end=\"240\">OPC UA<\/strong> no <strong data-start=\"244\" data-end=\"250\">E3<\/strong>, alguns comportamentos relacionados \u00e0 atualiza\u00e7\u00e3o de valores, \u00e0 inicializa\u00e7\u00e3o do Viewer e \u00e0 performance da aplica\u00e7\u00e3o podem gerar d\u00favidas ou impactos indesejados.<\/p>\n<p data-start=\"416\" data-end=\"520\">Este artigo apresenta orienta\u00e7\u00f5es para o <strong data-start=\"457\" data-end=\"472\">diagn\u00f3stico<\/strong> e a <strong data-start=\"477\" data-end=\"513\">otimiza\u00e7\u00e3o da comunica\u00e7\u00e3o OPC UA<\/strong> no E3.<\/p>\n<h2 data-start=\"522\" data-end=\"564\">Funcionamento das leituras OPC UA no E3<\/h2>\n<p data-start=\"566\" data-end=\"739\">Diferentemente de uma leitura de dados constante via <em data-start=\"619\" data-end=\"628\">polling<\/em>, o E3 implementa, conforme a norma <strong data-start=\"664\" data-end=\"674\">OPC UA<\/strong>, o conceito de <strong data-start=\"690\" data-end=\"738\">leituras ass\u00edncronas por meio de assinaturas<\/strong>.<\/p>\n<p data-start=\"741\" data-end=\"959\">O cliente E3 registra uma lista de <em data-start=\"776\" data-end=\"783\">nodos<\/em>, agrupados em assinaturas. O servidor notifica o cliente <strong data-start=\"841\" data-end=\"887\">somente quando ocorre a altera\u00e7\u00e3o de valor<\/strong> de algum desses nodos, informando quais <em data-start=\"928\" data-end=\"934\">tags<\/em> possuem novos valores.<\/p>\n<p data-start=\"961\" data-end=\"1076\">Caso n\u00e3o haja altera\u00e7\u00e3o de valor em nenhum nodo, o servidor envia apenas uma mensagem de <strong data-start=\"1050\" data-end=\"1064\">keep alive<\/strong> ao cliente.<\/p>\n<p data-start=\"1078\" data-end=\"1171\">O intervalo de atualiza\u00e7\u00e3o desses valores \u00e9 definido pela propriedade <strong data-start=\"1148\" data-end=\"1156\">Scan<\/strong> da assinatura.<\/p>\n<h3 data-start=\"1173\" data-end=\"1189\">A\u00e7\u00e3o sugerida<\/h3>\n<p data-start=\"1191\" data-end=\"1414\">Para fins de teste, recomenda-se aumentar o valor da propriedade <strong data-start=\"1256\" data-end=\"1264\">Scan<\/strong> das assinaturas no E3, a fim de verificar poss\u00edveis impactos no <strong data-start=\"1329\" data-end=\"1355\">tempo de inicializa\u00e7\u00e3o<\/strong> do Viewer ou no <strong data-start=\"1372\" data-end=\"1413\">comportamento da atualiza\u00e7\u00e3o das tags<\/strong>.<\/p>\n<p data-start=\"1416\" data-end=\"1633\">Quanto menor o valor de <em data-start=\"1440\" data-end=\"1446\">Scan<\/em>, mais rapidamente as tags ser\u00e3o atualizadas. Em contrapartida, valores menores aumentam a <strong data-start=\"1537\" data-end=\"1570\">sobrecarga no servidor OPC UA<\/strong>, o que pode resultar em <strong data-start=\"1595\" data-end=\"1632\">queda de performance da aplica\u00e7\u00e3o<\/strong>.<\/p>\n<h2 data-start=\"171\" data-end=\"217\">Ajuste da propriedade MaxNodesPerClientCall<\/h2>\n<p data-start=\"219\" data-end=\"399\">Alguns servidores OPC UA \u2014 principalmente <strong data-start=\"261\" data-end=\"269\">CLPs<\/strong>, devido a restri\u00e7\u00f5es de mem\u00f3ria \u2014 possuem limites quanto \u00e0 <strong data-start=\"329\" data-end=\"351\">quantidade de tags<\/strong> que podem ser processadas em uma \u00fanica chamada.<\/p>\n<p data-start=\"401\" data-end=\"617\">Dessa forma, o cliente <strong data-start=\"424\" data-end=\"430\">E3<\/strong> particiona o n\u00famero de <em data-start=\"454\" data-end=\"461\">nodos<\/em> em v\u00e1rias chamadas, conforme o valor configurado na propriedade <strong data-start=\"526\" data-end=\"551\">MaxNodesPerClientCall<\/strong>. Esse comportamento evita erros como <strong data-start=\"589\" data-end=\"616\">\u201cBad_TooManyOperations\u201d<\/strong>.<\/p>\n<p data-start=\"619\" data-end=\"771\">Os limites do servidor podem ser acessados internamente em sua <strong data-start=\"682\" data-end=\"701\">\u00e1rvore de nodos<\/strong>. Esses valores tamb\u00e9m podem ser visualizados no <strong data-start=\"750\" data-end=\"770\">log do Elipse E3<\/strong>.<\/p>\n<p data-start=\"773\" data-end=\"847\">Os principais limites que podem afetar diretamente as opera\u00e7\u00f5es do E3 s\u00e3o:<\/p>\n<p data-start=\"849\" data-end=\"899\"><strong data-start=\"849\" data-end=\"899\">Server \u2192 ServerCapabilities \u2192 OperationLimits:<\/strong><\/p>\n<ul data-start=\"900\" data-end=\"1032\">\n<li data-start=\"900\" data-end=\"946\">\n<p data-start=\"902\" data-end=\"946\"><strong data-start=\"902\" data-end=\"946\">MaxNodesPerTranslateBrowsePathsToNodeIds<\/strong><\/p>\n<\/li>\n<li data-start=\"947\" data-end=\"977\">\n<p data-start=\"949\" data-end=\"977\"><strong data-start=\"949\" data-end=\"977\">MaxMonitoredItemsPerCall<\/strong><\/p>\n<\/li>\n<li data-start=\"978\" data-end=\"1010\">\n<p data-start=\"980\" data-end=\"1010\"><strong data-start=\"980\" data-end=\"1010\">MaxNodesPerHistoryReadData<\/strong><\/p>\n<\/li>\n<li data-start=\"1011\" data-end=\"1032\">\n<p data-start=\"1013\" data-end=\"1032\"><strong data-start=\"1013\" data-end=\"1032\">MaxNodesPerRead<\/strong><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1034\" data-end=\"1050\">A\u00e7\u00e3o sugerida<\/h3>\n<p data-start=\"1052\" data-end=\"1221\">A propriedade <strong data-start=\"1066\" data-end=\"1091\">MaxNodesPerClientCall<\/strong>, no driver OPC UA do E3, deve ser configurada com o <strong data-start=\"1144\" data-end=\"1183\">menor valor informado pelo servidor<\/strong> dentre os limites apresentados acima.<\/p>\n<h2 data-start=\"162\" data-end=\"198\">Uso da propriedade AlwaysInAdvise<\/h2>\n<p data-start=\"200\" data-end=\"383\">Para melhorar a <strong data-start=\"216\" data-end=\"231\">performance<\/strong> em aplica\u00e7\u00f5es com grande quantidade de <strong data-start=\"271\" data-end=\"292\">objetos din\u00e2micos<\/strong>, recomenda-se configurar os <em data-start=\"321\" data-end=\"327\">tags<\/em> OPC UA com a propriedade <strong data-start=\"353\" data-end=\"371\">AlwaysInAdvise<\/strong> habilitada.<\/p>\n<h3 data-start=\"385\" data-end=\"398\">Benef\u00edcios<\/h3>\n<ul data-start=\"400\" data-end=\"605\">\n<li data-start=\"400\" data-end=\"467\">\n<p data-start=\"402\" data-end=\"467\">Mant\u00e9m o <em data-start=\"411\" data-end=\"416\">tag<\/em> permanentemente inscrito na <strong data-start=\"445\" data-end=\"466\">assinatura OPC UA<\/strong>;<\/p>\n<\/li>\n<li data-start=\"468\" data-end=\"605\">\n<p data-start=\"470\" data-end=\"605\">Melhora a performance da aplica\u00e7\u00e3o e evita <strong data-start=\"513\" data-end=\"541\">opera\u00e7\u00f5es desnecess\u00e1rias<\/strong> de mudan\u00e7a do modo de monitoramento dos <em data-start=\"582\" data-end=\"588\">tags<\/em> nas assinaturas.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"187\" data-end=\"225\">Propriedade OverrideEndpointURLHost<\/h2>\n<p data-start=\"227\" data-end=\"510\">No fluxo normal de uma comunica\u00e7\u00e3o <strong data-start=\"262\" data-end=\"272\">OPC UA<\/strong>, o cliente conecta-se ao servidor utilizando o endere\u00e7o configurado na propriedade <strong data-start=\"356\" data-end=\"371\">EndpointURL<\/strong>. Em seguida, o servidor retorna ao cliente uma lista de <strong data-start=\"428\" data-end=\"441\">Endpoints<\/strong>, contendo o endere\u00e7o de conex\u00e3o e os modos de seguran\u00e7a dispon\u00edveis.<\/p>\n<p data-start=\"512\" data-end=\"711\">Em alguns cen\u00e1rios, o servidor pode retornar Endpoints com <strong data-start=\"571\" data-end=\"598\">hostname ou endere\u00e7o IP<\/strong> diferentes daqueles acess\u00edveis pelo cliente <strong data-start=\"643\" data-end=\"649\">E3<\/strong>, impossibilitando, assim, a conclus\u00e3o do processo de conex\u00e3o.<\/p>\n<h3 data-start=\"713\" data-end=\"731\">Cen\u00e1rios comuns<\/h3>\n<ul data-start=\"733\" data-end=\"856\">\n<li data-start=\"733\" data-end=\"750\">\n<p data-start=\"735\" data-end=\"750\">Uso de <strong data-start=\"742\" data-end=\"749\">NAT<\/strong>;<\/p>\n<\/li>\n<li data-start=\"751\" data-end=\"781\">\n<p data-start=\"753\" data-end=\"781\">Ambientes <strong data-start=\"763\" data-end=\"780\">virtualizados<\/strong>;<\/p>\n<\/li>\n<li data-start=\"782\" data-end=\"827\">\n<p data-start=\"784\" data-end=\"827\"><strong data-start=\"784\" data-end=\"791\">DNS<\/strong> diferente entre servidor e cliente;<\/p>\n<\/li>\n<li data-start=\"828\" data-end=\"856\">\n<p data-start=\"830\" data-end=\"856\">Ambientes <strong data-start=\"840\" data-end=\"855\">redundantes<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"858\" data-end=\"1088\">Ao habilitar a propriedade <strong data-start=\"885\" data-end=\"912\">OverrideEndpointURLHost<\/strong>, o E3 substitui apenas o <strong data-start=\"938\" data-end=\"953\">hostname\/IP<\/strong> retornado pelo servidor pelo valor configurado no driver, mantendo o <strong data-start=\"1023\" data-end=\"1036\">protocolo<\/strong>, a <strong data-start=\"1040\" data-end=\"1049\">porta<\/strong> e o <strong data-start=\"1054\" data-end=\"1065\">caminho<\/strong> originais do Endpoint.<\/p>\n<h2 data-start=\"174\" data-end=\"214\">Falha na busca de n\u00f3s OPC UA (Browse)<\/h2>\n<p data-start=\"216\" data-end=\"354\">Caso ocorra falha na <strong data-start=\"237\" data-end=\"250\">navega\u00e7\u00e3o<\/strong> ou na <strong data-start=\"257\" data-end=\"280\">busca de n\u00f3s OPC UA<\/strong>, deve-se verificar a <strong data-start=\"302\" data-end=\"324\">estrutura de nomes<\/strong> utilizada no servidor OPC UA.<\/p>\n<h3 data-start=\"356\" data-end=\"388\">Aten\u00e7\u00e3o a palavras reservadas<\/h3>\n<p data-start=\"390\" data-end=\"475\">N\u00e3o devem ser utilizados nomes que entrem em conflito com <strong data-start=\"448\" data-end=\"474\">objetos internos do E3<\/strong>.<\/p>\n<h3 data-start=\"477\" data-end=\"488\">Exemplo<\/h3>\n<ul data-start=\"490\" data-end=\"527\">\n<li data-start=\"490\" data-end=\"527\">\n<p data-start=\"492\" data-end=\"527\">Pasta ou n\u00f3 chamado <strong data-start=\"512\" data-end=\"527\">Application<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-start=\"529\" data-end=\"608\">Esse nome n\u00e3o pode ser utilizado no E3 e pode causar falha na <strong data-start=\"591\" data-end=\"607\">busca de n\u00f3s<\/strong>.<\/p>\n<h3 data-start=\"610\" data-end=\"626\">A\u00e7\u00e3o sugerida<\/h3>\n<ul data-start=\"628\" data-end=\"729\">\n<li data-start=\"628\" data-end=\"672\">\n<p data-start=\"630\" data-end=\"672\">Renomear a pasta no <strong data-start=\"650\" data-end=\"669\">servidor OPC UA<\/strong>;<\/p>\n<\/li>\n<li data-start=\"673\" data-end=\"729\">\n<p data-start=\"675\" data-end=\"729\">Ou ajustar o <strong data-start=\"688\" data-end=\"710\">mapeamento dos n\u00f3s<\/strong> no projeto <strong data-start=\"722\" data-end=\"728\">E3<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<h2 data-start=\"176\" data-end=\"188\">Conclus\u00e3o<\/h2>\n<p data-start=\"190\" data-end=\"307\">A maioria dos problemas de <strong data-start=\"217\" data-end=\"232\">performance<\/strong> e <strong data-start=\"235\" data-end=\"257\">comunica\u00e7\u00e3o OPC UA<\/strong> no <strong data-start=\"261\" data-end=\"267\">E3<\/strong> est\u00e1 relacionada aos seguintes fatores:<\/p>\n<ul data-start=\"309\" data-end=\"462\">\n<li data-start=\"309\" data-end=\"344\">\n<p data-start=\"311\" data-end=\"344\">Configura\u00e7\u00e3o das <strong data-start=\"328\" data-end=\"343\">assinaturas<\/strong>;<\/p>\n<\/li>\n<li data-start=\"345\" data-end=\"383\">\n<p data-start=\"347\" data-end=\"383\">Limites de <strong data-start=\"358\" data-end=\"382\">chamadas por cliente<\/strong>;<\/p>\n<\/li>\n<li data-start=\"384\" data-end=\"419\">\n<p data-start=\"386\" data-end=\"419\">Gerenciamento de <strong data-start=\"403\" data-end=\"418\">tags ativos<\/strong>;<\/p>\n<\/li>\n<li data-start=\"420\" data-end=\"462\">\n<p data-start=\"422\" data-end=\"462\">Estrutura de <strong data-start=\"435\" data-end=\"461\">n\u00f3s do servidor OPC UA<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"464\" data-end=\"660\">A aplica\u00e7\u00e3o das <strong data-start=\"480\" data-end=\"497\">boas pr\u00e1ticas<\/strong> descritas neste artigo contribui para uma maior <strong data-start=\"546\" data-end=\"562\">estabilidade<\/strong>, melhor <strong data-start=\"571\" data-end=\"598\">desempenho da aplica\u00e7\u00e3o<\/strong> e um <strong data-start=\"604\" data-end=\"634\">diagn\u00f3stico mais eficiente<\/strong> de falhas de comunica\u00e7\u00e3o.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Descri\u00e7\u00e3o Ao utilizar o driver OPC UA no E3, alguns comportamentos relacionados \u00e0 atualiza\u00e7\u00e3o de valores, \u00e0 inicializa\u00e7\u00e3o do Viewer e \u00e0 performance da aplica\u00e7\u00e3o podem gerar d\u00favidas ou impactos&hellip;<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0},"categories":[578,1204],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dicas de performance e solu\u00e7\u00e3o de problemas ao utilizar o driver OPC UA no E3.<\/title>\n<meta name=\"description\" content=\"Aprenda como melhorar a performance e solucionar problemas ao utilizar o driver OPC UA no E3, ajustando assinaturas, limites de chamadas e propriedades do driver.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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