Use Link - Siemens How To

Before diving into the "how," it's critical to understand the "what." In Siemens ecosystems, a "Link" typically refers to one of three things:

Most search queries for "Siemens how to use link" revolve around WinCC’s "Tag Linking" and "Cross-Project Linking." We will focus heavily on that.

Mastering how to use link 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.

Recap of Key Steps:

Now that you have this guide, go ahead and open TIA Portal or WinCC Explorer. Start linking your automation world. If you encounter specific error codes, consult the Siemens Industry Online Support (SIOS) knowledge base, referencing the diagnostic buffers for your specific "Link" channel.

Keywords used: siemens how to use link, WinCC linking, Siemens TIA Portal link, cross-project linking, Siemens HMI animation link.

Rating: 8/10
Siemens’ linking system is powerful for PLC-HMI integration, but not as intuitive as some modern IDEs (e.g., Codesys or Beckhoff). Once you learn the tag-based approach, it becomes fast and reliable.

If you meant a different Siemens product (e.g., Simcenter, NX, or industrial routers), please clarify and I’ll tailor the review accordingly.

Since "Siemens" encompasses a wide range of software (from PLC programming to Product Lifecycle Management), this guide focuses on the two most common scenarios where users search for "how to use link":

In the world of industrial automation, the term "link" can mean many things. For Siemens users—whether you are configuring a PLC, setting up an HMI, or building a digital twin with TIA Portal—understanding how to establish, configure, and troubleshoot links is the backbone of modern manufacturing.

If you have searched for "Siemens how to use link," you are likely standing at a crossroads of connectivity. Do you need to link a variable from a PLC to an HMI? Link two function blocks in SCL (Structured Control Language)? Or perhaps establish a communication link between a Siemens S7-1200 and a third-party drive? siemens how to use link

This article provides a 360-degree view of link usage across the Siemens ecosystem, focusing on TIA Portal (Totally Integrated Automation Portal), Step 7, and WinCC.

This post explains how to connect and use Siemens devices together — specifically Siemens LOGO! / S7 PLCs and HMI panels — using Siemens’ linking methods in TIA Portal and LOGO! Soft Comfort. It covers physical connections, IP setup, programming data exchange (S7 UDTs/DBs, Modbus, Profinet IO, and TCP/UDP), and practical examples for exchanging tags between devices. Assumptions: you have basic PLC/HMI knowledge, TIA Portal V16+ or V17, and LOGO! Soft Comfort v8+.

Contents

Required hardware & software

Network & physical wiring

IP addressing and device naming

Methods to link devices (overview)

Detailed examples

Example A — LOGO! ↔ HMI using Modbus TCP

Example B — S7-1200 / S7-1500 ↔ HMI using Profinet

Example C — S7 ↔ S7 data exchange (PUT/GET and DB replication)

Example D — TCP/UDP sockets (custom)

Troubleshooting checklist

Security and operational tips

Appendix: sample tag map and symbolic example

If you want, I can:

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