> For the complete documentation index, see [llms.txt](https://doc.sysdevmobile.com/kalipso/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.sysdevmobile.com/kalipso/6.0/documentation/actions/group-communications/serial-write.md).

# Serial Write

**Serial Write**

Writes data to specified serial port.

Action available for the following operating systems:

<figure><img src="https://1102213384-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FM6Wz3tBjSWbCweZ8NltT%2Fuploads%2FruABjDF2Z7iy255xGivq%2F01_Supported_OS.png?alt=media&amp;token=166f7395-72c9-406f-91f1-e41412516cba" alt="OS Supported: Android, iOS, Win, Win32"><figcaption></figcaption></figure>

## Parameters

* **Serial Port** *\<unquoted string> -* The name of the port that user wants to write. Tipically is a Com Port, and user could choose from pre-defined Com Ports from Com0 to Com13. It's also possible defined a port dynamically by choosing option *dynamic* for this parameter.
* **Coded** *\<unquoted string> -* This parameter defines if the data to write is coded or not. The possible options for this parameter are: *Yes*, *No* or *dynamic*.
* **End of line** *\<unquoted string> -* The characters that the user wants to represent the end of line (Example: <13><10>).
* **Text to write** *\<string> -* The text that the user wants to write in the serial port.

{% hint style="warning" %}
The EndOfLine parameter is ignored at runtime. The Designer only replaces the fixed CR+LF sequences (when enclosed in quotation marks). This behavior is intended solely as a convenience feature, allowing line breaks to remain visible within the Designer while still being transmitted correctly at runtime.
{% endhint %}