> For the complete documentation index, see [llms.txt](https://wecon.gitbook.io/pistudio-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wecon.gitbook.io/pistudio-manual/3.-getting-started/3.2-configuring-communication.md).

# 3.2 Configuring communication

**Introduction**

The following steps will show how to change HMI project communication settings.

**Operating Procedure**

1\) Click \[Project]->\[Communication] to open setting window;

![](/files/-Lupi6RBErRnzf1z2Uxn)

2\) Click \[Setting] to open \[Communication device] window;

![](/files/-Lupi6RC8bi8WyzqGPfU)

3\) Select connection way, device protocol;

4\) Click \[Settings] to change communication parameters, COM is for serial connection, Device IP is for Ethernet connection;

![](/files/-Lupi6RDb6wGVCqdB3G2)

5\) Click \[OK] to save changes;

{% hint style="success" %}
**Result**

HMI communication is changed;
{% endhint %}