> 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/rx-config-tab.md).

# RX CONFIG tab

The tab **RX CONFIG** allows you to configure the behavior of the RX receiver on the field network. It is divided into two sections: **General** and **Admin**.

## Sub-tab: General

This section is dedicated to configuring the communication **Modbus RTU/TCP** of the receiver. This is where you define the rules that will allow your supervisor (PLC, BMS) to query the gateway.

### **Serial Link & Protocol Settings**

<table data-header-hidden><thead><tr><th width="213.4609375"></th><th></th></tr></thead><tbody><tr><td><strong>Speed (Baudrate)</strong></td><td>Communication speed of the serial link (e.g: <code>9600</code>, <code>19200</code>, <code>38400</code>... baud).</td></tr><tr><td><strong>Data bits</strong></td><td>Set to <code>8</code> bits (Modbus standard).</td></tr><tr><td><strong>Stop bits</strong></td><td>Choice between 1 or 2 stop bits.</td></tr><tr><td><strong>Parity</strong></td><td>Choice between <code>None</code> (None), <code>Even</code> (Even) or <code>Odd</code> (Odd).</td></tr><tr><td><strong>Modbus ID</strong></td><td>Gateway slave address (usually between 1 and 247).</td></tr><tr><td><strong>First register</strong></td><td>Starting address of the Modbus table. Default: <code>31000</code>.</td></tr><tr><td><strong>Physical Interface</strong></td><td>Software switch to choose between the port <code>RS485</code> or <code>RS232</code>.</td></tr></tbody></table>

### Advanced Settings (IP Connectivity)

By clicking the Advanced button, you access the receiver's network settings for diagnostic functions or Modbus TCP communication (if supported):

* **DHCP** (ON/OFF):
  * **`ON`** : The receiver automatically obtains an IP address from your network server.
  * **`OFF`** : You must manually assign a static IP address.
* **IP Address** : Lets you enter the desired fixed IP address (if DHCP is disabled).
* **Subnet Mask** : Lets you enter the desired fixed subnet mask address (if DHCP is disabled).
* **Gateway** : Lets you enter the desired fixed gateway address (if DHCP is disabled).

### Validation of changes

All changes made in the RX CONFIG tab are not applied instantly to avoid any accidental disconnection while entering data.

**Button** **Save** : Once your settings have been entered, click the "Save" button at the bottom of the page.

{% hint style="warning" %}
The **validation** of the changes will require a **restart** of the **RX.**
{% endhint %}

## Sub-tab: Admin

The Admin sub-tab brings together critical maintenance, access security, and system update functions.

### Password configuration

This section allows access to the configuration interface to be restricted.

* Password configuration:
  * **New** : Enter your new administrator password.
  * **Confirm** : Enter the password again to avoid typing errors.
* **Logout** : This button immediately closes the current user session.
* **Reboot** : Triggers an immediate hardware reboot of the receiver.

{% hint style="warning" %}
**Warning** : The **restart** is performed within **10 seconds** without any prior confirmation request. Make sure that no read/write operation is in progress on the Modbus network.
{% endhint %}

### **Firmware Update**

To ensure performance and benefit from the latest Enless Wireless features, you can update the device's internal software.

* **Version** of the current firmware: Displays the software version currently installed on your gateway.
* **Product type** : Select the relevant hardware from the drop-down list:
  * **`RX Receiver`** : For the main gateway.
  * **`RX Repeater`** : If you are configuring a range extension device.
* To update the *firmware* :
  1. Click on the **file selection**.
  2. Choose the binary file provided by Enless support.
  3. Click on **Update** to start the process.

{% hint style="danger" %}
An **update** *firmware* will require a **restart** of the RX. Make sure not to unplug it during the procedure.

**Before** proceeding with the **update**, please **export** your configuration csv file from the **Config TX** page using the **Export csv** button and import it again afterward if needed.

Make sure to use the **correct type** of file ***firmware*** to update your receiver or risk**damaging** your product. For example, *firmware* of the **RX MODBUS** is not **compatible** with a **RX BACNET**, and vice versa.
{% endhint %}

{% hint style="info" %}
If you encounter **display issues** after the update, we invite you to **clear the cache** of your browser.
{% endhint %}

### **Validation of settings**

Unlike the General sub-tab, the changes made here (such as changing the password) are applied differently:

* Button **Save** : By clicking this button, the new settings are saved and applied immediately.
* **No restart required** : Applying the Admin settings does not require a reboot cycle to take effect (except when explicitly using the "Reboot" button).


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