The most common use of the term "link" in automation is (also known as HMI Tag Connection). This is used to connect internal HMI tags to PLC tags so the HMI screen displays real-time data from the controller.

In your target WinCC project (the new HMI that will link to the source):

Open the hardware catalog on the right, search for "IE/PB Link," and drag the matching firmware version into your workspace.

What you are targeting?

Mastering in Siemens environments transforms a disjointed set of machines into a unified, intelligent system. Whether you are simply navigating between HMI screens using button events, animating a tank level with a dynamic tag link, or establishing a cross-project link between two WinCC servers, the core principle remains: creating a live, reliable bridge between data sources and visualization.

Choose a link device compatible with your controller (e.g., an Go to product viewer dialog for this item. for IO-Link applications).

Group tags into different cycle times. Increase sample intervals for non-critical assets. If you need help setting up your system, tell me: Which are you using?

What (e.g., TIA Portal V18, WinCC V8, Excel 365) are you running? What is the ultimate goal of your setup?

For specific, step-by-step guidance, you can refer to the official Siemens YouTube channel or FACTORY I/O documentation for, for example, setting up a LOGO! PLC.

To truly master "links" in Siemens products, adopt these expert mindsets:

These functions are used when you want to dynamically connect a property to a tag or retrieve the tag connected to a property.

Right-click the PLC folder in the project tree and select . Navigate to Protection & Security > Connection mechanisms .

Before setting up your connection, ensure you have the following components ready:

In TIA Portal, select the IO-Link Master (e.g., ET 200SP) and create a configuration, as described in the Siemens IO-Link system manual .