---
title: "Linked Tags | Examples | N3uron KB V1.22"
slug: "linked-tags-examples"
description: "Linked Tags is a N3uron module designed to allow users to link the values of two different tags using N3uron. When two tags are connected, the value of… "
updated: 2026-01-08T11:07:42Z
published: 2026-01-08T11:07:42Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.n3uron.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Examples

## Linking a Modbus tag to an OPC UA tag

This example demonstrates how to link a Modbus tag to an OPC UA tag, such as reading commands from a Modbus device and writing them to an OPC UA tag. In this case, the input tag is the Modbus tag, and the output tag is the OPC UA tag. The tags will be named /Modbus/Command and /OPC UA/Command, with the former having read/write permissions.

The screenshot below demonstrates the real-time status of the command tags. The **Modbus/Command** tag acts as the source, receiving data directly from a **Modbus Client module**; therefore, it is set to **Read-only (R)**. In contrast, the **OPC UA/Command** tag has **Read/Write (RW)** access. This configuration allows the **Linked Tags agent** to read the value from the Modbus source and write it into the OPC UA tag, effectively synchronizing the two systems.

![](https://cdn.document360.io/54093ab5-6b22-4542-a265-04377931f11a/Images/Documentation/image(129).png)

The next step is to configure the **Linked Tags** module to establish a unidirectional synchronization. As illustrated below, map the /Modbus/Command tag to the **Input property** and the /OPC UA/Command tag to the **Output property**. This configuration ensures that any value received from the Modbus client is automatically written to the OPC UA tag.

![](https://cdn.document360.io/54093ab5-6b22-4542-a265-04377931f11a/Images/Documentation/image(130).png)