{"id":145,"date":"2018-04-16T15:33:47","date_gmt":"2018-04-16T15:33:47","guid":{"rendered":"http:\/\/opcconnect.integrationobjects.com\/?p=145"},"modified":"2026-03-23T14:40:02","modified_gmt":"2026-03-23T14:40:02","slug":"what-is-opc-ua","status":"publish","type":"post","link":"https:\/\/integrationobjects.com\/blog\/what-is-opc-ua\/","title":{"rendered":"What is OPC UA? A Complete Guide for Industrial Automation"},"content":{"rendered":"\r\n<h2>What is OPC UA?<\/h2>\r\n<p data-start=\"429\" data-end=\"803\">OPC UA (<a href=\"https:\/\/en.wikipedia.org\/wiki\/OPC_Unified_Architecture\">Open Platform Communications Unified Architecture<\/a>) is a modern, platform-independent communication protocol designed for industrial automation. It enables secure, reliable, and standardized data exchange between devices, machines, and enterprise systems, supporting both traditional industrial applications and IIoT (Industrial Internet of Things) deployments.<\/p>\r\n<p data-start=\"805\" data-end=\"1035\">As manufacturers and industrial operators adopt Industry 4.0 technologies, OPC UA plays a crucial role in enabling seamless interoperability across PLCs, SCADA systems, MES platforms, cloud applications, and analytics tools.<\/p>\r\n<p data-start=\"1037\" data-end=\"1264\">Unlike legacy OPC Classic protocols, OPC UA supports both client-server and publisher-subscriber communication models, making it suitable for real-time monitoring, event-driven messaging, and scalable industrial networks.<\/p>\r\n<p><a id=\"download\" class=\"btn_product_download\" href=\"https:\/\/integrationobjects.com\/sioth-opc\/sioth-opc-unified-architecture\/opc-ua-universal-server\/\" target=\"_blank\" rel=\"noopener\">Discover our OPC UA Products<\/a><\/p>\r\n<h2 data-section-id=\"1n1sm8u\" data-start=\"1316\" data-end=\"1358\"><span role=\"text\"><strong data-start=\"1319\" data-end=\"1356\">History and Development<\/strong><\/span><\/h2>\r\n<p data-start=\"1360\" data-end=\"1553\"><a href=\"https:\/\/opcfoundation.org\/about\/opc-technologies\/opc-ua\/\">OPC UA<\/a> was developed by the OPC Foundation to overcome the limitations of OPC Classic, which was Windows-dependent, less secure, and difficult to scale for modern industrial applications.<\/p>\r\n<p data-start=\"1555\" data-end=\"1813\">The first versions of OPC UA appeared in the early 2000s, with continuous improvements to address evolving industrial needs. Today, the protocol provides a flexible architecture suitable for small embedded devices, high-end servers, and cloud infrastructure.<\/p>\r\n<h2 data-section-id=\"14qub29\" data-start=\"1820\" data-end=\"1877\"><span role=\"text\"><strong data-start=\"1823\" data-end=\"1875\">Why OPC UA is Critical for Industry 4.0 and IIoT<\/strong><\/span><\/h2>\r\n<p data-start=\"1879\" data-end=\"2065\">In the context of Industry 4.0, OPC UA enables connectivity between legacy industrial systems and modern technologies, such as IoT devices, cloud computing, and big data analytics.<\/p>\r\n<p data-start=\"2067\" data-end=\"2140\">By standardizing how data is exchanged, it helps manufacturers:<\/p>\r\n<ul data-start=\"2141\" data-end=\"2378\">\r\n<li data-section-id=\"1vqsz0u\" data-start=\"2141\" data-end=\"2196\">Break down data silos between OT and IT systems<\/li>\r\n<li data-section-id=\"nr3a4e\" data-start=\"2197\" data-end=\"2261\">Ensure real-time visibility and monitoring of operations<\/li>\r\n<li data-section-id=\"fwzdth\" data-start=\"2262\" data-end=\"2317\">Increase operational efficiency and flexibility<\/li>\r\n<li data-section-id=\"1ws3cay\" data-start=\"2318\" data-end=\"2378\">Enable predictive maintenance and AI-driven insights<\/li>\r\n<\/ul>\r\n<p data-start=\"2380\" data-end=\"2530\">Industries across Europe, North America, and the Middle East benefit from it by achieving interoperable, future-proof industrial operations.<\/p>\r\n<h2 data-section-id=\"19y83f3\" data-start=\"2537\" data-end=\"2562\"><span role=\"text\"><strong data-start=\"2540\" data-end=\"2560\">How OPC UA Works<\/strong><\/span><\/h2>\r\n<p>The modern communication protocol is fundamentally different from OPC Classic. It provides a service-oriented architecture (SOA) that supports modern industrial communication needs while remaining platform-independent.<\/p>\r\n<h3>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <strong>Architecture<\/strong><\/h3>\r\n<p data-start=\"2792\" data-end=\"2841\">It supports two communication patterns:<\/p>\r\n<ul data-start=\"2843\" data-end=\"3093\">\r\n<li data-section-id=\"1aaeyhe\" data-start=\"2843\" data-end=\"2958\">Client\/Server: Synchronous communication for real-time access to data from SCADA, PLCs, or MES systems.<\/li>\r\n<li data-section-id=\"1vjd37i\" data-start=\"2959\" data-end=\"3093\">Publisher\/Subscriber (PubSub): Asynchronous, event-driven communication, ideal for IIoT and large-scale data distribution.<\/li>\r\n<\/ul>\r\n<h3>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <strong>Communication Protocols<\/strong><\/h3>\r\n<p data-start=\"3135\" data-end=\"3227\">It is flexible, supporting multiple transport protocols and data encoding methods:<\/p>\r\n<ul data-start=\"3229\" data-end=\"3466\">\r\n<li data-section-id=\"1b6lffy\" data-start=\"3229\" data-end=\"3269\"><strong data-start=\"3231\" data-end=\"3245\">Protocols:<\/strong> TCP, HTTP, WebSockets<\/li>\r\n<li data-section-id=\"12bxvq8\" data-start=\"3270\" data-end=\"3347\"><strong data-start=\"3272\" data-end=\"3286\">Encodings:<\/strong> Binary for high performance; XML\/JSON for interoperability<\/li>\r\n<li data-section-id=\"16lgj6b\" data-start=\"3348\" data-end=\"3466\"><strong data-start=\"3350\" data-end=\"3370\">Transport Layer:<\/strong> Handles message segmentation, reassembly, error correction, and ensures reliable delivery<\/li>\r\n<\/ul>\r\n<h3>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <strong>Security Features<\/strong><\/h3>\r\n<p data-start=\"3502\" data-end=\"3596\">Security is a core part of it, protecting industrial data across OT and IT networks:<\/p>\r\n<ul data-start=\"3598\" data-end=\"3880\">\r\n<li data-section-id=\"1vftb4o\" data-start=\"3598\" data-end=\"3684\"><strong data-start=\"3600\" data-end=\"3619\">Authentication:<\/strong> Username\/password, X.509 certificates, and token-based methods<\/li>\r\n<li data-section-id=\"iyehht\" data-start=\"3685\" data-end=\"3740\"><strong data-start=\"3687\" data-end=\"3705\">Authorization:<\/strong> Role-based access control (RBAC)<\/li>\r\n<li data-section-id=\"ib2z1k\" data-start=\"3741\" data-end=\"3810\"><strong data-start=\"3743\" data-end=\"3758\">Encryption:<\/strong> Secures data in transit using standard algorithms<\/li>\r\n<li data-section-id=\"14dsbhx\" data-start=\"3811\" data-end=\"3880\"><strong data-start=\"3813\" data-end=\"3832\">Data Integrity:<\/strong> Message signing and hashing prevent tampering<\/li>\r\n<\/ul>\r\n<h2>Features &amp; Benefits<\/h2>\r\n<p data-start=\"3920\" data-end=\"3990\">OPC UA offers numerous advantages for modern industrial systems:<\/p>\r\n<ul data-start=\"3992\" data-end=\"4477\">\r\n<li data-section-id=\"1utq81w\" data-start=\"3992\" data-end=\"4084\"><strong data-start=\"3994\" data-end=\"4020\">Platform Independence:<\/strong> Runs on Windows, Linux, embedded devices, and cloud platforms<\/li>\r\n<li data-section-id=\"wyfqtt\" data-start=\"4085\" data-end=\"4169\"><strong data-start=\"4087\" data-end=\"4109\">Enhanced Security:<\/strong> Encryption, authentication, and data integrity mechanisms<\/li>\r\n<li data-section-id=\"1faiyux\" data-start=\"4170\" data-end=\"4244\"><strong data-start=\"4172\" data-end=\"4188\">Scalability:<\/strong> Suitable for small devices to enterprise-wide systems<\/li>\r\n<li data-section-id=\"1ssq9yz\" data-start=\"4245\" data-end=\"4340\"><strong data-start=\"4247\" data-end=\"4265\">Extensibility:<\/strong> <strong data-start=\"4266\" data-end=\"4338\">Supports adding new features without impacting existing applications<\/strong><\/li>\r\n<li data-section-id=\"1e8a90f\" data-start=\"4341\" data-end=\"4477\"><strong data-start=\"4343\" data-end=\"4378\">Advanced Information Modelling:<\/strong> <strong data-start=\"4379\" data-end=\"4475\">Represents complex industrial processes and assets using standardized object-oriented models<\/strong><\/li>\r\n<\/ul>\r\n<h2>OPC Classic vs. OPC UA<\/h2>\r\n<p>OPC Classic, introduced in the mid-1990s by OPC Foundation, was one of the first standards aimed at facilitating communications in industrial automation. The OPC specifications provided a common interface for data exchange between different systems and devices, enabling interoperability in a heterogeneous environment.<\/p>\r\n<p><a id=\"download\" class=\"btn_product_download\" href=\"https:\/\/integrationobjects.com\/login\/?url=integrationobjects.com\/download_manual&amp;link=\/images\/2022\/04\/SIOTH-Datasheet.pdf&amp;id=Datasheet\" target=\"_blank\" rel=\"noopener\">What\u2019s OPC? <\/a><\/p>\r\n<p>&nbsp;<\/p>\r\n<p><a href=\"https:\/\/integrationobjects.com\/blog\/what-is-opc-most-used-technology-automation-world\/\">OPC Classic<\/a> encompasses several specifications. The 3 main specifications are:<\/p>\r\n<ul>\r\n<li><strong>OPC Data Access (DA):<\/strong> for real-time data communication<\/li>\r\n<li><strong>OPC Alarms and Events (AE):<\/strong> for alarm and event notifications<\/li>\r\n<li><strong>OPC Historical Data Access (HDA):<\/strong> for historical data communication<\/li>\r\n<\/ul>\r\n<p>These specifications allowed industrial control systems, such as SCADA (Supervisory Control and Data Acquisition), DCS (Distributed Control Systems), and PLCs (Programmable Logic Controllers), to share data efficiently.<\/p>\r\n<p>Despite its role, OPC Classic faced several limitations and challenges. The following table provides a clear comparison of the key differences between them in terms of their architecture and capabilities.<\/p>\r\n<table style=\"height: 757px;\" width=\"704\">\r\n<tbody>\r\n<tr>\r\n<td width=\"120\">\r\n<p><strong>Aspect<\/strong><\/p>\r\n<\/td>\r\n<td width=\"234\">\r\n<p><strong>OPC Classic<\/strong><\/p>\r\n<\/td>\r\n<td width=\"270\">\r\n<p><strong>OPC UA<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"120\">\r\n<p><strong>Platform Independence<\/strong><\/p>\r\n<\/td>\r\n<td width=\"234\">\r\n<p>Tied to Windows, based on Microsoft\u2019s COM\/DCOM technology<\/p>\r\n<\/td>\r\n<td width=\"270\">\r\n<p>Platform-independent, runs on various operating systems including Windows, Linux, and embedded systems<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"120\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Architecture<\/strong><\/p>\r\n<\/td>\r\n<td width=\"234\">\r\n<p>Uses multiple specifications for different functionalities (DA, AE, HDA)<\/p>\r\n<\/td>\r\n<td width=\"270\">\r\n<p>Service-oriented architecture (SOA), integrates all functionalities into a single, extensible framework<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"120\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Security<\/strong><\/p>\r\n<\/td>\r\n<td width=\"234\">\r\n<p>Limited security features<\/p>\r\n<p>DCOM presents several security vulnerabilities<\/p>\r\n<\/td>\r\n<td width=\"270\">\r\n<p>Comprehensive security features including authentication, encryption, and integrity checks<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"120\">\r\n<p><strong>Scalability<\/strong><\/p>\r\n<\/td>\r\n<td width=\"234\">\r\n<p>Not well-suited for large-scale systems<\/p>\r\n<\/td>\r\n<td width=\"270\">\r\n<p>Scalable architecture supporting a wide range of devices and applications<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"120\">\r\n<p><strong>Information Modeling<\/strong><\/p>\r\n<\/td>\r\n<td width=\"234\">\r\n<p>Basic data structures<\/p>\r\n<\/td>\r\n<td width=\"270\">\r\n<p>Advanced information modeling capabilities allowing for complex data structures and relationships<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"120\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Interoperability <\/strong><\/p>\r\n<\/td>\r\n<td width=\"234\">\r\n<p>Compatibility issues with non-Windows platforms and modern IT infrastructures<\/p>\r\n<\/td>\r\n<td width=\"270\">\r\n<p style=\"text-align: center;\">Enhanced interoperability with support for various communication protocols and modern IT systems<\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<p>Ultimately, OPC UA significantly enhances the capabilities of OPC Classic by offering platform independence, advanced security, scalability, and improved information modeling, making it a more robust and flexible solution for modern industrial communication needs.<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1447\" src=\"https:\/\/integrationobjects.com\/blog\/wp-content\/uploads\/2018\/04\/opc-classic-vs-opc-ua.png\" alt=\"OPC Classic vs OPC UA\" width=\"775\" height=\"364\" srcset=\"https:\/\/integrationobjects.com\/blog\/wp-content\/uploads\/2018\/04\/opc-classic-vs-opc-ua.png 775w, https:\/\/integrationobjects.com\/blog\/wp-content\/uploads\/2018\/04\/opc-classic-vs-opc-ua-300x141.png 300w, https:\/\/integrationobjects.com\/blog\/wp-content\/uploads\/2018\/04\/opc-classic-vs-opc-ua-768x361.png 768w\" sizes=\"auto, (max-width: 775px) 100vw, 775px\" \/><\/p>\r\n<p style=\"text-align: center;\"><strong><em>OPC Classic vs OPC UA<\/em><\/strong><\/p>\r\n<div class=\"wp-block-buttons is-content-justification-center\">\r\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-fill\" style=\"margin-bottom: 20px;\"><a class=\"wp-block-button__link has-luminous-vivid-orange-background-color has-background no-border-radius\" href=\"https:\/\/integrationobjects.com\/sioth-opc\/sioth-opc-tunneling\/opcnet-broker-da-hda-ae\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Still Using OPC Classic? See how you can secure your communications <\/strong><\/a><\/div>\r\n<\/div>\r\n<h2>How to migrate from OPC Classic to OPC UA<\/h2>\r\n<p>Migrating from OPC Classic to OPC UA becomes increasingly essential to leverage modern features like platform independence, enhanced security, and scalability. This transition ensures that systems remain future-proof, interoperable, and capable of meeting contemporary industrial requirements. However, the <a href=\"https:\/\/integrationobjects.com\/blog\/video-tutorials-migration-opc-classic-to-ua-vice-versa\/\">migration process<\/a> can seem daunting due to the significant differences between the two standards.<\/p>\r\n<p>To facilitate a smooth and efficient transition from OPC Classic, we provide <a href=\"https:\/\/integrationobjects.com\/sioth-opc\/sioth-opc-unified-architecture\/opc-ua-wrapper\/\">OPC UA Wrapper<\/a>, a plug-and-play software product designed for seamless integration. The Wrapper bridges the gap between OPC Classic and OPC UA, facilitating the coexistence of both protocols and allowing organizations to advance industrial communication without disrupting critical processes.<\/p>\r\n<p>The software includes 2 components:<\/p>\r\n<ul>\r\n<li style=\"list-style-type: none;\">\r\n<ul>\r\n<li>An\u00a0OPC UA Wrapper\u00a0that acts as a bridge between OPC Classic servers and OPC UA Clients<\/li>\r\n<li>An OPC UA Proxy that acts as a bridge between OPC UA servers and OPC Classic clients<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<ul>\r\n<li>\r\n<h3><strong>Migration Challenges and how OPC UA Wrapper addresses them<\/strong><\/h3>\r\n<\/li>\r\n<\/ul>\r\n<p>The migration process is not without its challenges. As organizations embark on the migration journey from OPC Classic to OPC UA, hurdles such as data mapping, security integration, and protocol interoperability may arise.<\/p>\r\n<p>OPC UA Wrapper is engineered to tackle migration challenges by providing a comprehensive solution and mitigating the complexities associated with such migrations.<\/p>\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td width=\"208\">\r\n<p><strong>Challenge<\/strong><\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p><strong>Description<\/strong><\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p><strong>OPC UA Wrapper Solution<\/strong><\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"208\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Data Mapping intricacies<\/strong><\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Mapping the addresses spaces of OPC Classic and OPC UA protocols<\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Facilitates data mapping by intelligently bridging the address spaces of OPC Classic servers and OPC UA servers<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"208\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Security Integration Complexities<\/strong><\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Integrating robust security features during migration can be complex and critical<\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Provides built-in encryption and authentication mechanisms, managing security settings and certificates<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"208\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Protocol Interoperability Concerns<\/strong><\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Ensuring interoperability between different vendors and vendors and versions due to variations in implementations<\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Uses standardized profiles in OPC UA to facilitate seamless communication between diverse devices and systems<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"208\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Efficient handling of alarms and events<\/strong><\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Migrating alarms and events to ensure efficient handling and acknowledgement<\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Allows efficient reading and acknowledgment of alarms and events, ensuring smooth transition without disruption,<\/p>\r\n<p>&nbsp;<\/p>\r\n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td width=\"208\">\r\n<p><strong>\u00a0<\/strong><\/p>\r\n<p><strong>Efficient Handling of Real-time and Historical Data<\/strong><\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Migrating real-time and historical data efficiently<\/p>\r\n<\/td>\r\n<td width=\"208\">\r\n<p>Enables efficient reading and writing of real-time OPC item data and secure handling of historical data operations<\/p>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<h3>\u00b7\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <strong>OPC UA Wrapper Features<\/strong><\/h3>\r\n<p>The OPC UA Wrapper offers comprehensive functionalities to ensure a robust and versatile integration process:<\/p>\r\n<ul>\r\n<li><strong>COM Server to UA Server:<\/strong> allows Unified Architecture (UA) clients to access classic OPC servers as if they were UA servers<\/li>\r\n<li><strong>UA Server to COM Server:<\/strong> enables classic OPC clients to access UA servers as if they were OPC COM servers<\/li>\r\n<li><strong>Intuitive User Interface:<\/strong> simplifies the migration process with a user-friendly interface for easy configuration and integration management<\/li>\r\n<li>Run as Windows Service: operates in the background as a Windows service<\/li>\r\n<li><strong>OPC UA Security:<\/strong> provides security features such as secure communication channels, session tracking, encryption, and message signing, with configurable security modes and user identity tokens<\/li>\r\n<li><strong>Log Capabilities:<\/strong> records messages with different logging levels for tracking execution and diagnosing problems, aiding in troubleshooting<\/li>\r\n<li><strong>Read and Write OPC Item Values:<\/strong> allows easy reading and writing of OPC item values for enhanced control and monitoring<\/li>\r\n<li><strong>Historical Data Read Capability:<\/strong> supports reading historical data for analysis and insights from past industrial processes, enhancing industrial communication capabilities<\/li>\r\n<li><strong>Reading and acknowledging alarms and events:<\/strong> real-time monitoring and alerting by facilitating the mapping of alarms and events between OPC Classic Server and the OPC UA information model, enabling efficient management and timely acknowledgment<\/li>\r\n<\/ul>\r\n<p>The software supports multiple OPC specifications, including OPC Data Access (DA), OPC Historical Data Access (HDA), and OPC Alarms &amp; Events (AE), providing a comprehensive solution for various industrial requirements.<\/p>\r\n<p><a id=\"download\" class=\"btn_product_download\" href=\"https:\/\/integrationobjects.com\/opc-demo\/opc-ua-demo-videos\/\" target=\"_blank\" rel=\"noopener\">Watch Demo Videos <\/a><\/p>\r\n<p>&nbsp;<\/p>\r\n<p>OPC UA stands as a pivotal advancement in industrial communication, addressing the limitations of OPC Classic and meeting the complex demands of modern automation systems. Its platform independence, robust security features and scalability make it a vital component of Industry 4.0, facilitating interoperability and future-proofing investments in industrial systems.<\/p>\r\n<p>With products like OPC UA Wrapper ensures seamless integration and continued operational efficiency. Embracing OPC UA not only enhances current industrial processes but also positions organizations for future technological advancements and greater innovation.<\/p>\r\n<p>Users can also opt to develop their OPC UA interfaces and completely replace existing OPC Classic links by OPC UA communications. To facilitate such development process, we provide rapid development kits enabling users, developers, system integrators and OEM to reduce their development costs.<\/p>\r\n<p>Our <strong>OPC UA Client Toolkit<\/strong> expedites OPC UA client software development in. NET, simplifying the handling of OPC UA services and server interfacing. With support for OPC UA information models, including data access, alarms and events, and historical data access, .NET-based applications seamlessly access data from any OPC UA server without navigating OPC UA complexities. Moreover, the toolkit offers C# and VB examples for 32-bit and 64-bit.<\/p>\r\n<p><a id=\"download\" class=\"btn_product_download\" href=\"https:\/\/integrationobjects.com\/sioth-opc\/sioth-opc-unified-architecture\/opc-ua-client-toolkit\/\" target=\"_blank\" rel=\"noopener\">Download OPC UA Client<\/a><\/p>\r\n<p>We also offer an <strong>OPC UA Server toolkit<\/strong> that simplifies the development of OPC UA server applications in .NET, eliminating the need to navigate the complexities of the OPC UA standard. With support for C# .NET or VB .NET, developers can quickly build applications while the toolkit manages all OPC UA communication details. Additionally, users can access the resulting .NET server applications locally or remotely from any OPC UA clients using their endpoint URLs.<\/p>\r\n<p><a id=\"download\" class=\"btn_product_download\" href=\"https:\/\/integrationobjects.com\/sioth-opc\/sioth-opc-unified-architecture\/opc-ua-server-toolkit\/\" target=\"_blank\" rel=\"noopener\">Download OPC UA Server Toolkit<\/a><\/p>\r\n<ul>\r\n<li style=\"list-style-type: none;\">\r\n<ul><\/ul>\r\n<\/li>\r\n<\/ul>\r\n<div id=\"_tcx-2avyx35ozpg\" class=\"_tc_offscreeneded\">\u00a0<\/div>\r\n<div id=\"_tcx-glc94ahp939\" class=\"_tc_offscreeneded\">\u00a0<\/div>","protected":false},"excerpt":{"rendered":"<p>What is OPC UA? OPC UA (Open Platform Communications Unified Architecture) is a modern, platform-independent communication protocol designed for industrial automation. It enables secure, reliable,<\/p>\n","protected":false},"author":1,"featured_media":156,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[183],"tags":[177,176,50],"class_list":["post-145","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-opc-ua","tag-opc-ua-client-toolkit","tag-opc-ua-server-toolkit","tag-opc-ua-wrapper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is OPC UA? A Complete Guide for Industrial Automation<\/title>\n<meta name=\"description\" content=\"What is OPC UA? 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