OPC Studio User's Guide and Reference
Python Examples
For the very simple, introductory example, see Get OPC data into Python on our main Web site:
The examples are targeting Microsoft .NET Framework 4.7.2 (and will also run under newer versions), and/or .NET 6 or 8.
Python examples were originally tested in CPython 3.6.2 with pythonnet 2.5.2, and CPython 3.11.5 with pythonnet 3.0.2.
On Windows, if you have used the Setup Program to install QuickOPC, Python projects and Visual Studio solutions with examples in Python are available from the Start menu or the Launcher application. On other platforms (or when you are simply installing the QuickOPC Python Packages), you are advised to download the example archives from the Web and unpack them on your computer. This is described further below.
Examples for Python can be downloaded directly from the Web, in form of archive (.TGZ or .ZIP) files. This distribution method can be used without running any installer, on all operating systems. The archive files available are:
The examples are delivered in source form only. If you want to run them, you need to have or install the proper .NET runtime. For .NET 6 or 8:
In order to use the example archives, first download them to your system, and extract the files from the archive. With a GUI on Windows, you can download the files using a Web browser, and uncompress the .ZIP with built-in Windows Explorer (shell) commands. You may have similar features on your Linux, depending on what distribution you chose. If you don't, following commands can be used in the terminal to download and extract the archives (the URL and file names are just examples - replace them with the right ones if you need a different set of examples):
wget "http://cdn.opclabs.com/files/downloads/OPCLabs-OpcStudio/2024.2/Examples-Python.tgz"
tar -xvzf Examples-Python.tgz
On macOS, and on Linux systems where wget is not available, you can use curl -O instead.
DocExamples: A large collection of OPC “Classic” and OPC XML-DA console-based examples that illustrate the use of individual objects in the product, and their members. These are the same examples that appear in reference and conceptual documentation, with an extra control routine that allows the use to choose an example to be performed.
FormsDocExamples: A collection of OPC “Classic” and OPC XML-DA Windows Forms-based examples that illustrate the use of individual objects in the product, and their members. These are the same examples that appear in reference and conceptual documentation, with an extra control routine that allows the use to choose an example to be performed.
UADocExamples: A large collection of OPC-UA console-based examples that illustrate the use of individual objects in the product, and their members. These are the same examples that appear in reference and conceptual documentation, with an extra control routine that allows the use to choose an example to be performed.
UAFormsDocExamples: A collection of OPC-UA Windows Forms-based examples that illustrate the use of individual objects in the product, and their members. These are the same examples that appear in reference and conceptual documentation, with an extra control routine that allows the use to choose an example to be performed.