> For the complete documentation index, see [llms.txt](https://docs.incari.com/incari-studio/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.incari.com/incari-studio/toolbox/communication/serial/serialstart.md).

# Serial Start

## Overview

![The Serial Start Node.](/files/FUtJutnbv6NnuFsSqhTg)

The **Serial Start Node** starts a **Serial** connection that has already been set up in [**Project Settings**](/incari-studio/modules/project-settings/serial.md).

**Serial Communication** in **Incari** is available as a plugin and is enabled as default. However, in the case that it is disabled in the **Plugins Editor**, it will not appear in the **Project Settings** and **Serial Start** will not show up in the [**Toolbox**](/incari-studio/toolbox/overview.md). Please refer to the [**Plugins Editor**](/incari-studio/modules/plugins.md) to find out more information.

It is important to note that while the **Serial Start Node** starts a **Serial** connection, it may not completely finish establishing said connection when the **Node** is executed. This could lead to the **Logic** attached to its **Output Pulse** to not work even though there is technically nothing wrong. In order to avoid this, it is highly suggested to use the [**On Serial Start Node**](/incari-studio/toolbox/communication/serial/events/onserialstart.md) instead. This way, the **Logic** will only execute once the **Serial** connection has definitely been established.

Again, the user must first use the **Serial Start Node** to open the connection. Separately, the **On Serial Start Node** can be used to execute the desired **Communication Logic**.

![Serial Start and On Serial Start Configuration](/files/FL2weNoZTziSS8xisQAP)

[**Scope**](https://github.com/cgi-studio-gmbh/incari-doc/blob/2025.1/toolbox/communication/overview.md#scopes): **Project**, **Scene**.

## Attributes

![The Serial Start Node Attributes.](/files/ocq3YgZ8VSFxCh9Y2vKK)

| Attribute       | Type          | Description                        |
| --------------- | ------------- | ---------------------------------- |
| `Configuration` | **Drop-down** | The desired **Serial** connection. |

## Inputs

| Input             | Type      | Description                                                           |
| ----------------- | --------- | --------------------------------------------------------------------- |
| *Pulse Input* (►) | **Pulse** | A standard **Input Pulse**, to trigger the execution of the **Node**. |

## Outputs

| Output             | Type      | Description                                                                                                                            |
| ------------------ | --------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| *Pulse Output* (►) | **Pulse** | A standard **Output Pulse**, to move onto the next **Node** along the **Logic Branch**, once this **Node** has finished its execution. |

## See Also

* [**Serial Send Packet**](/incari-studio/toolbox/communication/serial/serialsendpacket.md)
* [**Serial Stop**](/incari-studio/toolbox/communication/serial/serialstop.md)