> For the complete documentation index, see [llms.txt](https://enless.gitbook.io/centre-aide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enless.gitbook.io/centre-aide/guides-installation/documentation-en/products/rx-modbus/configuration/modbus-tab.md).

# MODBUS tab

The tab **MODBUS** allows you to view the receiver’s exchange table in real time. This is where you will find the exact addresses to query in order to retrieve data from your sensors in your supervision system (SCADA, PLC, BMS).

## Transmitter selection

On the left side of the screen, a list shows all previously configured sensors.

* Each item is identified by its LoRa ID and sensor type.
* **Action** : Click on a sensor to display its specific register table in the central panel.

## Register table

Once a sensor is selected, the table displays the Modbus registers assigned to it:

<table data-header-hidden><thead><tr><th width="189.94140625"></th><th></th></tr></thead><tbody><tr><td><strong>Register number</strong></td><td>The exact Modbus address to query (starting with the offset defined in the RX CONFIG tab).</td></tr><tr><td><strong>Hexadecimal value</strong></td><td>The raw received value, useful for communication diagnostics.</td></tr><tr><td><strong>Decimal value</strong></td><td>The numeric conversion of the raw data.</td></tr><tr><td><strong>Interpretation</strong></td><td>Clear description of the data (ex: <code>Temperature 19.3 °C</code>, <code>Humidity 0.0 %</code>).</td></tr></tbody></table>

{% hint style="info" %}
In the Modbus table, the **pulse count** is encoded on two 16-bit registers. The **value** **maximum** value of the counter is therefore 0xFFFFFFFF = 4,294,967,295.
{% endhint %}

## Table export

A button **Export .csv** is available at the bottom of the interface:

* It allows you to extract the complete mapping table in CSV format.
* This file is particularly useful for integrators to copy and paste register addresses directly into their configuration software (Modbus Master).

The resulting .csv file contains the following header:&#x20;

```csv
Location,Register,Hexadecimal,Decimal,Interpretation,Value,Unit
```

## Modbus table Excel file

The Excel file detailing the receiver's Modbus table is available here: [Modbus table](/centre-aide/ressources/ressources-en/lora-easy-receivers/modbus-table.md)


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