# 3.5 Simulation

**Introduction**

The following steps will show how to use simulator in HMIEditorP.

**Operating procedure of offline simulation**

1. Click \[off-line] to open the simulation window;
2. Check HMI screen in window;

**Operating procedure of online simulation**

1. Click \[on-line] to open \[online simulation serial select tool];
2. Select COM port in PC for link;
3. Click \[OK] to open simulation window;
4. Check HMI project in window

![](https://2132722362-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M0u7fewQOmu9vIPyLEl%2F-M13mGHHDqF8JLYZdZxB%2F-M13mTU17JbUP1N6Cwxj%2Fimage.png?alt=media\&token=2cf85c40-2d7f-4997-91b7-ee2400bf6569)

{% hint style="info" %}
Note:

If HMI project uses Ethernet communication, no need selects any port in online simulation.
{% endhint %}
