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Combined display of all available logs of OPC Labs Knowledge Base. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 16:54, 12 December 2025 User talk contribs created page OPC development in Visual FoxPro (Created page with "Category:Visual FoxPro <div class="content-intro"> <h1 title="Develop OPC FoxPro solutions">Visual FoxPro</h1> <p>Are you having difficulties incorporating OPC data into your Visual FoxPro solution? Need to create an OPC FoxPro program quickly and in quality? If so, QuickOPC comes to the rescue. Fox programs can now connect to OPC servers with ease.</p> <p>QuickOPC is a set of components that simplify the task of integrating OPC client functionality into applica...")
• 16:44, 12 December 2025 User talk contribs created page OPC with Trill (Created page with "Category:Trill <div class="content-intro"> <h1 title="Develop OPC PowerBuilder solutions">Trill</h1> <p>Are you trying to incorporate OPC data into your Trill solution? If so, QuickOPC comes to the rescue. Trill can now connect to OPC servers with ease.</p> <p>QuickOPC is a set of components that simplify the task of integrating OPC client functionality into applications. Reading a value from OPC Data Access or OPC Unified Architecture (OPC UA) se...")
• 16:38, 12 December 2025 User talk contribs created page QuickOPC-COM in C/C++ (Created page with "Category:C++ <div class="content-intro"> <h1 title="QuickOPC-COM in C/C++">OPC development in C and C++</h1> <p>QuickOPC will make it easy for you to integrate OPC client functionality into your solution developed in C or C++ language. Reading a value from OPC Data Access or OPC UA server, or writing a data value can be achieved in just a few lines of C or C++ code. You can also set up subscriptions and receive event notifications about data changes. OPC Alarms&...")
• 16:24, 12 December 2025 User talk contribs created page OPC development in PowerBuilder (Created page with "Category:PowerBuilder Category:PowerScript <div class="content-intro"> <h1 title="Develop OPC PowerBuilder solutions">PowerBuilder</h1> <p>Are you having difficulties incorporating OPC data into your PowerBuilder solution? Need to create a OPC PowerScript program quickly and in quality? If so, QuickOPC> comes to the rescue. PowerBuilder programs can now connect to OPC servers with ease.</p> <p>QuickOPC is a set of components that simplify the task of integrating...")
• 16:13, 12 December 2025 User talk contribs created page OPC development in FSharp (Created page with "Category:F-sharp <div class="content-intro"> <h1 title="QuickOPC in F#">OPC development in F#</h1> <p>QuickOPC makes it easy for you to integrate OPC client functionality into your Visual F# solution. Reading a value from OPC Data Access or OPC Unified Architecture server, or writing a data value can be achieved in just one or two lines of code. You can also set up subscriptions and receive event notifications about data changes. What's more, in your OPC F# program,...")
• 15:49, 12 December 2025 User talk contribs created page StreamInsight Extensions for QuickOPC (Created page with "Category:StreamInsight <div class="content-intro"> <h1 title="Develop OPC StreamInsight solutions">StreamInsight Extensions for QuickOPC</h1> <p>The StreamInsight Extensions for QuickOPC> allow you to bring in <i>streaming data</i> from OPC sources into StreamInsight, analyze them and process them further, and even feed the results back to OPC servers. With OPC StreamInsight, data from OPC can be combined with data from multiple other sources. You can monit...")
• 15:30, 12 December 2025 User talk contribs created page Get OPC data into Perl (Created page with "<div class="content-intro"> <h1 title="How to develop OPC Perl solutions">Get OPC data into Perl</h1> <p>With QuickOPC, you can create new OPC Perl solutions, or integrate OPC functionality into your Perl scripts.</p> <p><strong>How does QuickOPC allow integration of OPC data into Perl?</strong></p> <ul> <li>QuickOPC provides COM (OLE Automation) objects with easy interfaces to perform all kinds of OPC tasks</li> <li>You instantiate one of the main QuickOPC objects.</li>...")
• 15:12, 12 December 2025 User talk contribs created page OPC with Microsoft SQL Server (Created page with "<div class="content-intro"> <h1 title="Develop SQL OPC clients, and OPC-SQL solutions">OPC with Microsoft SQL Server</h1> <p>It is a common requirement in automation to store or retrieve data to or from SQL databases. QuickOPC makes it easy for you to create OPC SQL solutions, i.e. integrate OPC client functionality into your database solution with Microsoft SQL Server. Reading a value from OPC Data Access server, or writing a data value can be achieved in just several l...")
• 15:43, 10 December 2025 User talk contribs created page OPC Q&A (Created page with "= Are subscriptions and asynchronous operations similar? = Both OPC subscription, and OPC asynchronous reads/writes require a callback from the OPC server to the OPC client. In this sense, they are quite similar, and a subscription can be considered a special case of the asynchronous OPC communication. The asynchronous read/writes, however, are "one-shot" transactions, initiated individually by the OPC client. The subscription is created inside the OPC server by the OP...")
• 15:26, 10 December 2025 User talk contribs created page About OPC Standards and Technologies (Created page with "= What is OPC? = OPC is a [http://opcfoundation.org/about/what-is-opc/ worldwide standard] of application interface in industrial automation software and the enterprise systems that support industry. OPC standards are provided in form of various specifications. OPC standards and OPC technology can be used by anybody without any royalty charges to OPC Foundation. This page attempts to provide explanation of commonly used OPC terms. = What is an OPC Server? = OPC Server...")
• 15:17, 10 December 2025 User talk contribs created page Videos from OPCTI explaining what OPC is, how people are using it and why (Created page with "What Is OPC? = Part 1: OPC Overview = Engineers, operations managers, technicians, automation professionals, IT personnel and other will benefit from this presentation as it explains what OPC is, how people are using it and why. = Part 2: OPC Case Study = = Part 3: OPC Specifications = = Part 4: OPC Compliance =")
• 15:06, 10 December 2025 User talk contribs created page A (Partial) Story of OPC URLs (Created page with "Have you ever seen something like this, when connecting to an OPC server? opcda://TEST-OPC/Kepware.KEPServerEX.V5/{B3AF0BF6-4C0C-4804-A122-6F3B160F4397} It looks like an URL. But, is it an URL? In this case, you might guess that it refers to an OPC Data Access server, and that the TEST-OPC is the name of the computer, "KEPServerEX.V5" is the OPC server's ProgID, and {B3AF0BF6-4C0C-4804-A122-6F3B160F4397} is its CLSID. For OPC "Classic" servers, the OPC specification...")
• 15:06, 10 December 2025 User talk contribs created page File:Softing-demo-client-url.png
• 15:06, 10 December 2025 User talk contribs uploaded File:Softing-demo-client-url.png
• 14:53, 10 December 2025 User talk contribs created page Automated Testing of OPC Clients using the CTT (Created page with "(Published: 07 January 2014; Updated: 31 July 2016) For long time, we have been performing automated tests of our OPC client libraries. This is basically a combination of unit tests and integration tests, and we have developed these tests along with the products themselves. This year (2013), however, we have been been going through the OPC compliance certification procedures for OPC Unified Architecture (OPC-UA) with our QuickOPC product, and a new area of tests has em...")
• 14:13, 10 December 2025 User talk contribs created page OPC Glossary (Created page with "; Access Rights : Access rights allowed to a given item. Can be Read only, Write only, or Read/Write. ; Asynchronous : Various OPC calls explicitly make use of asynchronous communication. When an OPC Client application issues an asynchronous call, the OPC Server acknowledges receipt of the call itself. The OPC Server then “calls” the OPC Client application back with the result using a callback. The OPC Client application does not know when it will receive the callba...")
• 14:07, 10 December 2025 User talk contribs created page QuickOPC Videos From Software Toolbox (Created page with "[https://www.softwaretoolbox.com Software Toolbox], our U.S. reseller, has created multiple videos about QuickOPC (in the videos. QuickOPC is referred to as "OPC Data Client" or "OPCData.NET"). == Live Binding videos: == * [http://ftp.softwaretoolbox.com/videos/datanet/SubscribeTag.mp4 How to Subscribe to A Tag]. How do I use the Data.NET's live binding feature to subscribe to a single tag? * [http://ftp.softwaretoolbox.com/videos/datanet/SubscribeMultiple.mp4 How to Su...")
• 13:43, 10 December 2025 User talk contribs created page Why You Shouldn't Write Low-Level OPC Code Yourself (Created page with "This article has been inspired by an e-mail conversation we have recently had with a customer. He had written a piece of code "from the scratch" that connected to his OPC Data Access server, and was able to obtain the data he needed to store in a database. He therefore had doubts about the value and usefulness of a library such as QuickOPC; it appeared to him that the task of writing an OPC client is quite easy. During the course of a discussion, we have identified quit...")
• 13:06, 10 December 2025 User talk contribs created page 5 Steps for DCOM Configuration, from OPCTI (Created page with "= Introduction: 5 Things you need to know = OPC Technology relies on Microsoft's COM and DCOM to move data between sources and applications. If you receive DCOM errors such as 'Access Denied' or are terrified of opening up DCOMCNFG and editing the registry of your operating system, then this 5 part tutorial is for you. <iframe width="420" height="315" src="//www.youtube.com/embed/_TEC-ohtYco?rel=0" frameborder="0" allowfullscreen></iframe>")
• 11:29, 9 December 2025 User talk contribs moved page Category:Procedural coding to Category:Imperative programming
• 06:01, 24 October 2025 User talk contribs deleted redirect Rapid Toolkit for Sparkplug Versions by overwriting (Deleted to make way for move from "EasySparkplug Versions")
• 06:01, 24 October 2025 User talk contribs moved page EasySparkplug Versions to Rapid Toolkit for Sparkplug Versions over redirect
• 06:00, 24 October 2025 User talk contribs moved page Rapid Toolkit for Sparkplug Versions to EasySparkplug Versions
• 13:20, 20 October 2025 User talk contribs created page Rapid Toolkit for Sparkplug Versions (Created page with "Category:Rapid Toolkit for Sparkplug Category:Product Versions See also: What's New See also: QuickOPC Versions See also: Excel Connector Versions See also: OPC Wizard Versions = Rapid Toolkit for Sparkplug 2025.2 - = {| class="wikitable" |+Version Table !Product Name<br>(Internal Version) !.NET Runtime !Operating System !Primary Development Tool !Key Changes - What's New<br/>(click the link for details) !Release Date;<br>Product Links...")
• 13:12, 20 October 2025 User talk contribs created page Category:MQTT Broker Primers (Created page with "Elementary introductions to various MQTT broker products.")
• 14:31, 6 October 2025 User talk contribs created page Troubleshooting Sparkplug Host Applications (Created page with "(tbd)")
• 14:31, 6 October 2025 User talk contribs created page Troubleshooting Sparkplug Edge Nodes (Created page with "(tbd)")
• 14:30, 6 October 2025 User talk contribs created page Sparkplug Troubleshooting (Created page with "(tbd)")
• 15:11, 26 August 2025 User talk contribs created page Category:MQTT Broker (Created page with "Category:MQTT")
• 14:35, 26 August 2025 User talk contribs created page MQTT Brokers for Experiments (Created page with "Category:MQTT Category:Sparkplug = Introduction = There are many MQTT brokers that you can use. This article lists just some of them, in no particular order, and provides links to other articles on the Web that cover the topic. = Installable MQTT Brokers = We have concise instructions ("primers") on how to get started with several MQTT brokers: * A primer on Chariot MQTT Server * A primer on Eclipse Mosquitto * A primer on HiveMQ Broker = MQTT Broke...")
• 14:05, 25 August 2025 User talk contribs created page Broker connection in SparkplugCmd utility (Created page with "!!!")
• 13:47, 25 August 2025 User talk contribs created page Category:Sparkplug (Created page with "{{Sparkplug trademarks disclaimer}}")
• 13:43, 25 August 2025 User talk contribs created page Template:Sparkplug trademarks disclaimer (Created page with "Sparkplug® is a trademark of Eclipse Foundation, Inc.")
• 08:07, 24 August 2025 User talk contribs created page Using SparkplugCmd Utility as Sparkplug Edge Node (Created page with "Category:Sparkplug Category:SparkplugCmd Utility Category:Tools and Online Services For general information about the SparkplugCmd tool, see Category:SparkplugCmd Utility. = Commands, Arguments and Options = The commands described here can be entered at the '''SparkplugCmd>''' prompt, or directly on the command-line invoking the SparkplugCmd utility. == Command: '''edgeNode''' ==")
• 14:37, 22 August 2025 User talk contribs created page Using SparkplugCmd Utility as Sparkplug host application (Created page with "Category:Sparkplug Category:SparkplugCmd Utility Category:Tools and Online Services For general information about the SparkplugCmd tool, see Category:SparkplugCmd Utility. = Commands, Arguments and Options = == Command: consumer subscribePayload == Use this command to subscribe to payload notifications from an edge node or device. The received payload are displayed in a table form. == Command: consumer subscribeMetric == Use this command to subscri...")
• 14:23, 22 August 2025 User talk contribs created page Category:SparkplugCmd Utility (Created page with "Category:Sparkplug Category:Tools and Online Services = Introduction = The SparkplugCmd utility is a program that allows performing various Sparkplug operations from the command line. Among other uses, it can act as * a Sparkplug host application, * a Sparkplug edge node. SparkplugCmd can be used for evaluation, experiments, and testing. SparkplugCmd is a console application, running on .NET. It is available for .NET Framework (Windows only), or .NET (Window...")
• 14:11, 22 August 2025 User talk contribs created page Command-Line Utilities Concepts (Created page with "This article applies to: * OpcCmd Utility * SparkplugCmd Utility = Commands, Arguments and Options = The command-line utilities have a concept of (possibly nested) ''commands'' and their ''arguments'' and ''options''. The command names are case insensitive. The command-line utilities also supportsparsing of response files. Arguments beginning with '@' are treated as a file path to a response file. A resp...")
• 08:25, 22 August 2025 User talk contribs moved page What's new in Connectivity Products 2025.2 to What's new in Connectivity Software 2025.2
• 14:15, 21 August 2025 User talk contribs created page Troubleshooting the Setup program (Created page with "Category:Installation category:Troubleshooting In case of non-obvious installation problems, it might be helpful to view a detailed installation log. The installer creates a log file automatically. By default, it is located in the user’s temporary directory, has a <strong>".txt"</strong> extension, and its name starts with <strong>“Setup Log”</strong> and it includes the date of the installation and a sequence number. For example, the installation log file...")
• 08:38, 20 August 2025 User talk contribs moved page What's new in Connectivity Studio 2025.2 to What's new in Connectivity Products 2025.2
• 11:22, 18 August 2025 User talk contribs moved page What's new in OPC Studio 2025.2 to What's new in Connectivity Studio 2025.2
• 14:27, 1 August 2025 User talk contribs created page A primer on Chariot MQTT Server (Created page with "= Introduction = Chariot® is a commercial, Sparkplug-compliant MQTT broker. Web page: https://cirrus-link.com/mqtt-broker-iiot-mqtt-servers/ Download: https://docs.chariot.io/display/CHAR2x/Chariot+Downloads Documentation: https://docs.chariot.io/display/CHAR2x/Chariot+MQTT+Server+Documentation = Installation = See https://docs.chariot.io/display/CHAR2x/Chariot+MQTT+Server+Installation .")
• 10:42, 1 August 2025 User talk contribs created page A primer on HiveMQ Broker (Created page with "= Introduction = HiveMQ Broker is a commercial MQTT Broker based on Java. Web site: https://www.hivemq.com/products/mqtt-broker/ Download: https://www.hivemq.com/download/ (the whole HiveMQ Platform) Documentation: https://docs.hivemq.com/hivemq/latest/user-guide/index.html (the whole HiveMQ Platform) = Installation =")
• 09:26, 1 August 2025 User talk contribs created page A primer on Eclipse Mosquitto (Created page with "Eclipse Mosquitto™ is an open source MQTT broker. Web site: https://mosquitto.org/ Download: https://mosquitto.org/download/ Documentation: https://mosquitto.org/documentation/ Public broker: https://test.mosquitto.org/")
• 07:53, 12 June 2025 User talk contribs created page UA Configuration Tool Download (Created page with "The UA Configuration Tool (Windows desktop application; by OPC Foundation) allows the user to inspect and manage various aspects of OPC UA functionality on Windows computers. More information... {| class="wikitable" |- !Target platform and requirements !Version !Installers |- |Windows<br>.NET Framework 4.7 (or later) |Current: 1.03 |<table><tr><td>EXE file:</td><td>{{Style=button|[https://www.opclabs.com/files/downloads/Opc.Ua.Configur...")
• 07:53, 12 June 2025 User talk contribs created page UA Certificate Generator Download (Created page with "The UA Certificate Generator (Windows console application; by OPC Foundation) allows the user to work with instance certificates for OPC UA applications (clients and servers). It can issue, renew, revoke and unrevoke certificates, and works with a certificate store specified by a file path. The UA Certificate Generator is included in the UA Configuration Tool Download (separate page). Its file name is '''Opc.Ua.CertificateGenerator.exe'''. Documentation: https://git...")
• 07:47, 12 June 2025 User talk contribs created page SparkplugCmd Utility Download (Created page with "The SparkplugCmd utility (console application) is a program that allows performing various Sparkplug operations from the command line. It can act as a generic Sparkplug host application or Sparkplug edge node, and be used for evaluation, experiments, and testing. '''More information...''' {| class="wikitable" |- !Target platform and requirements !Version !Binaries !ClickOnce |- |Windows, Linux or macOS<br>.NET 9.0 |Current or Preview<r...")
• 07:44, 12 June 2025 User talk contribs created page OPC UA PubSub Formatter Download (Created page with "The OPC UA PubSub Formatter (Windows desktop application) allows you to visualize the output of formatting OPC UA PubSub network messages (currently, JSON message mapping only). More information... thumb {| class="wikitable" |- !Target platform and requirements !Version !ClickOnce |- |Windows<br>.NET Framework 4.7.2 (or later) |Current or Preview<ref name="current-or-preview">Either the latest version re...")
• 07:40, 12 June 2025 User talk contribs created page OPC UA Demo Publisher Download (Created page with "The UADemoPublisher program (console application) is a demonstration publisher for OPC UA PubSub. '''More information...''' {| class="wikitable" |- !Target platform and requirements !Version !Binaries !ClickOnce |- |Windows, Linux or macOS<br>.NET 9.0 |Current or Preview<ref name="current-or-preview">Either the latest version released, or a preview of the upcoming version</ref> |<table><tr><td>ZIP file:</td><td>{{Style=button|[https://www.o...")
• 07:36, 12 June 2025 User talk contribs created page OPC Kit Server Download (Created page with "The OPC Kit Server is an OPC Classic server (OPC DA and OPC A&E) providing simulated data. For more information, see [https://kb.opclabs.com/OPC_Classic_Demo_Servers#OPC%20%Kit%Server OPC Kit Server]. {| class="wikitable" |- !Target platform and requirements !Binaries |- |Windows |<table><tr><td>ZIP file:</td><td>{{Style=button|[https://www.opclabs.com/files/downloads/OPCKitServer/OPCKitServer.zip Download]}}</td></tr></table> |} License: [https://opensource.org/licens...")